d
please give branlyist
Answer: D. Gene flow would increase between the two halves, and speciation would not occur
Explanation:
Speciation is a phenomena of evolution of a new species from the existing parent species. This occurs when the population of the species gets separated due to geographical barrier, behavioral and due to temporal isolation (having distinct mating seasons). The members of the separated populations may undergo with genetic variations and mutations which may likely to produce a new species.
According to the given situation, if the split halves rejoined then speciation would not occur because speciation requires time for genetic variations and mutations to occur. As, a result of rejoining of the two halves the gene flow will occur due to inbreeding and speciation would not occur.
need help help
what would happen to the cells if the body lost all its nutrients by way of the kidney
Answer:Your kidneys are bean-shaped organs, each about the size of your fist. They are located near the middle of your back, just below the rib cage. The kidneys are sophisticated trash collectors. Every day, your kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water. The waste and extra water become urine, which flows to your bladder through tubes called ureters. Your bladder stores urine until you go to the bathroom.
Explanation:
How long does a mutation last?
Answer:
How long does a mutation last?
AS Long As The Cell Lives
Explanation:
Answer:
C: As long as the cell lives. Hope this helps! :D
Explanation:
which process produces two copies of the original DNA molecules
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
Hope this helps you!!!
Please mark this as the brainliest one!!!
Answer:
DNA replication
Explanation:
DNA replication is the process of formation of new DNA molecules. It uses the two strands of the existing DNA molecules as templates and forms their complimentary copies.
One round of DNA replication forms two DNA molecules from one parental DNA. Here, each newly formed DNA molecule has one strand from parent DNA and the other newly formed strand.
What are mutations?
A) changes in nucleotides of a DNA molecule that affect the genetic message
B) repairs of damage to DNA molecules by specialized enzymes
C) removal of damaged DNA nucleotides by enzyme molecules
D) reduction in the rate of replication of DNA due to regulatory mechanisms
Mutations are permanent alterations of the DNA sequence that can affect an organism's physical traits, potentially causing diseases like cancer. They can be caused by errors during DNA replication or by environmental factors like chemical mutagens and radiation. Mutations range from point mutations to large chromosomal changes and can be benign, beneficial, or harmful.
A mutation is a permanent alteration in the nucleotide sequence of a genome, which may occur due to various reasons such as damage to DNA, replication errors, or the action of mobile genetic elements. Mutations can lead to changes in an organism's phenotype or observable characteristics, playing a critical role in both normal and abnormal biological processes. This includes contributing to evolution, the emergence of cancer, and the complexities of the immune system.
Among the different types of mutations are point mutations (a change in a single nucleotide), insertions, deletions, and large-scale mutations that alter chromosomal structure. While some mutations are benign or even beneficial, others can be deleterious, leading to diseases like cancer, or even be lethal.
Mutagens, including radiations like X-rays and gamma rays, as well as chemical substances, can cause mutations. Some mutations occur spontaneously and can be passed on to next generations if they occur in germ cells, or remain confined to an individual if they occur in somatic cells.
Which is not an echinoderm?
A)sea star
B)sea urchin
C)sand dollar
D)spider
Answer:
An echinoderm is a marine invertebrate. Starfish, Sea urchin, and Sand dollars are all echinoderms. A spider is an arachnid. Which means a spider is *NOT* an echinoderm.
Answer: D) Spider
Hope this helps. :-)
Answer:
D)spider
Explanation:
Starfish, Sea urchin, and Sand dollar, all of following are echinoderms. A spider is a an arachnid.
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
A population of hyenas inhabits a tropical savanna. At the beginning of the year, there were 100 hyenas in the population. Throughout the year, 20 hyenas died, 35 hyenas were born, 5 hyenas migrated into the population, and no hyenas left the population. What was the size of the population at the end of the year?
At the end of the year, there were (blank) hyenas in the population.
Answer:
120 is the size of the population at the end of the year
Explanation:
Size of the population is given by
Total number of Hyenas present in the population + Total number of Hyenas born + Total number of Hyenas migration into the population – Total number of Hyenas died
Substituting the given values in above equation, we get -
[tex]= 100 + 35 + 5 -20\\= 120\\[/tex]
120 is the size of the population at the end of the year
At the end of the year, there were 120 hyenas in the population.
Step 1: Calculate the change in population due to births, deaths, and migration:
Starting population: 100 hyenas
Deaths: 20 hyenas
Births: 35 hyenas
Migration in: 5 hyenas
Migration out: 0 hyenas
Step 2: Calculate the net change in population:
Net change = Births - Deaths + Migration in - Migration out
Net change = 35 - 20 + 5 - 0 = 20 hyenas
Step 3: Determine the population size at the end of the year:
Population at the end of the year = Starting population + Net change
Population at the end of the year = 100 + 20 = 120 hyenas
Step 4: Conclusion:
At the end of the year, there were 120 hyenas in the population.
What is the color of ozone?
O A. pale blue
OB. bright yellow
O c.
pale green
OD. white
Ozone gas does indeed have a slight blue color. It is dark blue in a liquid form and purple-black in solid form. The color comes from the fact that it absorbs all wavelengths of light other than those in the blue region.
Ozone gas has a pale blue color. It is a bluish gas that is often associated with the upper layers of Earth's atmosphere,.
Option A is correct.
What is the ozone?Ozone is a molecule made up of three oxygen atoms. It is a pale blue gas that is odorless and tasteless. Ozone is found in the stratosphere, the layer of Earth's atmosphere that is about 10 to 50 kilometers above the Earth's surface. Ozone absorbs ultraviolet radiation from the sun, which helps to protect life on Earth from the harmful effects of UV radiation.
Ozone is also found in the troposphere, the layer of Earth's atmosphere that is closest to the Earth's surface. However, ozone in the troposphere is harmful to human health. It can cause respiratory problems, such as asthma and bronchitis. It can also damage plants and crops.
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may somebody help me please.
Here you go buddy.
Answer:
4. c) The cell enters [tex]G_{1}[/tex].
Cytokinesis is the last step in the process of cell division and it begins prior to the end of mitosis, in anaphase. Through this process, the cytoplasm of the dividing cell is split in two, and thus two identical daughter cells are obtained. These cells are diploid and thus contain a full complement of chromosomes.
5. c) [tex]G_{1}[/tex] --> S --> [tex]G_{2}[/tex] --> mitosis --> cytokinesis.
The cell division process begins with a cell growth period known as interphase.
During [tex]G_{1}[/tex], the cell increases in mass in preparation for cell division. All cellular contents, excluding the chromosomes, are duplicated. This is followed by the S phase in which the chromosomes are duplicated. This step end in [tex]G_{2}[/tex] during which the cell continues to increase in mass and synthesize proteins. Here, the duplicated chromosomes are also checked for errors and repaired if necessary.
During mitosis, the chromosomes in the nucleus are divided into two new nuclei through the mitotic spindle. The cytokinesis is the last step in which the cytoplasm is divided evenly into two new daughter cells.
6. a) DNA replication
During synthesis, the DNA contained within the chromosomes is replicated. This will result in a complete copy of the genetic material. This stage is preceded by the [tex]G_{1}[/tex] phase and followed by the [tex]G_{2}[/tex] phase. These three phases composed the cell growth period known as the interphase.
7. d) interphase
The interphase is a period in which the cell grows in mass ([tex]G_{1}[/tex] and [tex]G_{2}[/tex] phases) as well as a replication of the genetic material (S phase). This will result in a larger cell that will contain a copy of all the structures and genetic material found before the interphase.
8. d) DNA copying: synthesis phase
[tex]G_{1}[/tex] is the first phase in the process known as interphase. It is characterized by a duplication off all cellular structures with the exception of DNA. The DNA is copied during the synthesis phase, which starts at the end of [tex]G_{1}[/tex]. This DNA will be checked for errors and repaired during the [tex]G_{2}[/tex] phase.
9. b) [tex]G_{2}[/tex]:S
During prophase, the chromosomes inside the cell’s nucleus condense in tight structures. These are then arranged in a line along the equator of the cell during metaphase. The DNA contained within the nucleus is duplicated in the S phase and then are checked for errors during [tex]G_{2}[/tex].
10. c) The nucleus is divided into two nuclei
The genetic material that has been duplicated during the S stage of the interphase, will need to be divided so that two identical daughter cells may result. This occurs during the stage of cell division known as mitosis. The end result will be two nuclei that will belong one to each daughter cell.
11. b) Metaphase
Metaphase is the third of five step that compose the cellular division process known as mitosis. During this stage, the duplicated chromosomes in the S stage of interphase are arranged in a line along the equator of the cell. These in turn will be divided and thus for two new nuclei from that of the original cell.
Examine the weather map. The arrows are pointing to the line with triangles. What does the line indicated by the arrows most likely represent?
a front
an isotherm
high winds
high humidity
The correct answer is - a front.
On this image, the lines are representing a front, and since the signs are marked with blue color, it means that it is a cold front. The fronts are advancing masses of air. In this case, we have a cold front, thus we have advancing cold air masses in the western part of the US, and in the Great Lakes region and the northeastern part of the country. This means that these areas will be affected by colder air masses, that will bring in higher air pressure, colder weather, and cold winds from the direction from which these cold fronts are coming.
Simple Answer:
A front
<Jayla>
Where is light penetration in a river or stream likely to be lowest
The light penetration in a river or stream is likely to be lowest AT THE MOUTH.
Streams and rivers are bodies of water that flow in one direction only; they travel from the source to the mouth. A river mouth refers to the part of a river, where the river merge with another river, stream or other forms of water bodies.
Around the mouth of the river, the water is usually murky as a result of all the sediments that the river has picked up during its travel upstream, this significantly reduce the amount of light that can penetrate the water at this point.
Due to decrease in the amount of light that penetrate the water at the mouth region, there is decrease in the level of oxygen in the water and a corresponding decrease in diversity of plant and animals that can be found in the mouth region of the river.
why do some scientists promote the use of carbon dioxide sequestration technologies?
A. Current technologies are expensive and potentially dangerous.
B. Burning fossil fuels does not produce very much carbon dioxide.
C. Trapping carbon dioxide uses a lot of energy and water resources.
D. They can allow for a net reduction in greenhouse has emissions.
Apex Environmental Science 10 Points
of All of the organisms living today, what percentage will eventually become fossils
A very small percentage of all living organisms will become fossils, as the process requires specific and rare conditions. Fossil evidence shows that existing species at any time represent only about 0.2-2% of species that have existed. Extinction also contributes to the rarity of potential fossils.
Explanation:Considering all of the organisms living today, only a very small percentage will eventually become fossils. The process of fossilization is rare and occurs under specific conditions; remains must be covered quickly by sediments or preserved through other extraordinary means, such as being trapped in tree resin or frozen in glaciers. Given that fossils are critical for understanding the Earth's history and the evolution of life, their scarcity highlights their value for scientific research.
Based on scientific analysis, the average lifespan of a species based on fossil evidence is about 1-10 million years, suggesting that at any given time, existing species represent only a fraction—about 0.2-2%—of all the species that have ever lived. Furthermore, extinction is an ongoing process, affecting a significant portion of living species, which also influences the potential for organisms to become fossilized.
How does gravity put plant roots in the right place to help a plant live and grow (A). it helps roots move toward the light.
(B). It helps roots spread out to get air.
(C). It helps roots to reach down for water.
(D). It helps roots grow together for warmth.
Plz hurry
The answer is C, it helps the roots to down. Think of gravity, it keeps us in place
The answer is C because we know it can’t be D and it not going to get air under ground so it must be C.
Samuel wanted to test how well three types of soil holds water. He poked several small holes in the bottoms of three plastic cups and filled one with sand, one with clay, and one with loam. He set each cup of soil inside a slightly smaller cup, like in the picture shown. He poured the same amount of water into each cup of soil and came back one hour later to measure how much water had dripped through each soil. The following amounts of water were found at the bottoms of the smaller cups.
Sand: 4 ml
Clay: 0 ml
Loam: 2.5 ml
Based on this information, which statement is true?
A) He poured the most water into the cup containing sand.
B) He did not pour any water into the cup containing clay.
C) Clay retained the most water out of the three substances.
D) Sand retained the most water out of the three substances.
the answer to your question is D)
Answer:
C) Clay retained the most water out of the three substances
Explanation:
Based on this information, "clay retained the most water out of the three substances" is the statement that is true.
The experiment was carried out to test the water holding capacity of the three types of soil. In this experiment, 0ml of water was found at the bottom of the smaller cup which contains the clay soil, while sand and loam soil has 4mls and 2.5mls respectively. Clay soil has 0ml of water at the bottom of the cup because it retained the most amount of water and has the highest water holding capacity than the other soils. Clay soil has smaller fine particles. The smaller a soil particles are, the larger the soil’s surface area is, and so the more water the soil retains. This is why clay soil retained the most amount of water in the experiment.
Which feature is not found in all cells?
Nucleus is NOT found ALL cells.
Common features of cells include the cell membrane, the cytoplasm, and the cytoskeleton. Cells also have ribosomes, which are structures where proteins are made. . Cells are classified as prokaryotes or eukaryotes.
The smallest and simplest cells are prokaryotes. A prokaryotic cell is a cell that lacks a nucleus and other internal compartments. As a group they are also among the most ancient. Fossilized prokaryotic cells have been found in rocks over 3 billion years old. A eukaryote is a cell that has a nucleus and other internal compartments, known as organelles.
Hope this helps!!!!!!!!! ^_^
A feature that is not found in all cells is a nucleus as a nucleus is a membrane-bound organelle that is present in eukaryotic cells but not in prokaryotic cells, and the nucleus acts as the central repository for genetic material.
What is the significance of the different cells?In eukaryotic cells, the nucleus stores the genetic material and contains the cell's DNA in the form of chromosomes and it also plays an important role in regulating the expression of genes and controlling the cell's growth and division, while prokaryotic cells lack a nucleus and have a more simple structure than eukaryotic cells.
Hence, a feature that is not found in all cells is a nucleus as a nucleus is a membrane-bound organelle that is present in eukaryotic cells but not in prokaryotic cells, and the nucleus acts as the central repository for genetic material.
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which of the following correctly describes an R-strategy?
A. long life span
B. slow to mature
C. little to no care of offspring
the correct answer is c. little to no care of offspring
How does energy usually flow in ecosystems?
A. from the Sun through consumers to producers
B. from the Sun through producers to consumers
C. from producers through the Sun to consumers
D. from consumers through the Sun to producers
Answer:
B. From the Sun through producers to consumers.
Explanation:
All energy is obtained from the Sun. So the producers (in this case plants, fruits, vegetables) receive that energy through the process of Photosynthesis. After that transfer, consumers (primary, secondary, and tertiary) gain 10% of that Sun obtained energy from its producers.
Hope this helps!
Answer:
The answer is B.
Match each organism with the correct description.
1. algae
omnivore
2. deer
carnivore
3. hawk
scavenger
4. human
decomposer
5. vulture
producer
6. mushrooom
herbivore
1. Algae
producer
2. Deer
herbivore
3. hawk
carnivore
4. human
omnivore (honestly a really broad statement but overall yes most humans are omnivores c:)
5. vulture
scavenger
6. mushroom
decomposer
hope this helps! :)
Answer:
1. Algae (Producer ) [Because all algae species are autotrophs]
2. Deer (Herbivore) [Because deer eat vegetation]
3. Hawk (Carnivore ) [They eat flesh]
4. Human (Omnivore ) [Eat everything including greens and flesh]
5. Vulture (Scavenger) [Feeds on dead remains]
6. Mushroom (Decomposer) [Degrades organic matter in soil]
The striking molecular similarities that exist between Earth's many diverse species can best be explained by A. random changes that occur separately in each species' genetic code. B. the sharing of common ancestors within the species' evolutionary history. C. the inability of the species to undergo evolutionary change over time. D. species mating with other species to produce offspring.
Answer:
B
Explanation:
While we may have many species on earth, they all share a common ancestor known as the cenancestor. Even when comparing the genomes of many different species on earth, these are a number of genes (approximately 300) that have been conserved throughout these species some of these being associated with cellular respiration and central dogma.
Answer: Option B
Explanation:
There are many different types of organism that is related to each other. Some of the organisms have been evolved from other organisms.
Two organism are said to be similar because the organism are closely related to each other. They have more recent common ancestors.
The characters in the organism are similar because they are related to each other by their ancestry.
in figure 32-3 a muscle that moves food through your digestive system is shown in
B
Explanation;B are smooth muscles.Smooth muscle is found in the walls of hollow organs throughout the body. Smooth muscle contractions are involuntary movements triggered by impulses that travel through the autonomic nervous system to the smooth muscle tissue.The smooth muscle of the alimentary canal or the digestive tract facilitates the peristaltic waves that move swallowed food and nutrients.Answer:
Option B.
Explanation:
Smooth muscles are spindle shaped, non-striated muscles and have uninucleated fibers. They are involuntary muscles and are found in the walls of internal organs such as the organs of digestive system. Peristalsis of smooth muscles of digestive system creates a wave like pattern of muscle contraction and moves the food through the system. Images A and B represent skeletal and cardiac muscles respectively both of which have striated fibers.
Many inlets form when severe storms carry large amounts of sand from around the mouths of streams or rivers out to sea. This fast erosion may seem negative, but it can help create a unique type of habitat.
This habitat is known as
A) a lake habitat.
B) a marine habitat.
C) an estuary habitat.
D) a barrier reef habitat.
The correct answer is c.
Answer:the person is right thank you (:
Explanation: lol i had the same question like this on usatestprep
What is bio geochemical cycling?
Answer
Hi,
Geochemical cycling is the flow of substances or elements that occurs between reservoirs in Earth’s atmosphere, the water bodies and the lithosphere.
Explanation
A geochemical cycle is normally the path followed by chemical elements in the surface and crust of the Earth. The cycle starts with the crystallization of magma in the lithosphere at the surface or at depth. Weathering and surface alteration follows breaking down igneous rock that will be transported and deposited as sediments. The sediments become lithified and later metamorphosed until melting happens to form new magma.
Best wishes!
Which of these statements best explains why the inner core of Earth does not melt although it has very high temperatures?
The liquid outer core cools the inner core.
The plastic mantle conducts the heat away from the core.
The iron which makes up the core melts at very high temperature.
The different layers of Earth exert pressure to keep the inner core solid.
Please don answer unless your fairly sure of yourself. thank you
Answer:
The core is in a cube structure, extreme temperatures make the atoms to move so quickly that there is no alteration of the structure hence, no melting.
Explanation:
In the case of extremely high temperatures, atoms change position but still keep their original shape.
Further explanation:
In the case of high temperatures, the atoms making up a cube move rapidly and change position, the change of position is the melting.
Answer:
Option D, The different layers of Earth exert pressure to keep the inner core solid.
Explanation:
Due to extreme high pressure at the core of the earth, the iron does not convert into liquid form. According to a research conducted by KTH Royal Institute of Technology, the iron acquires the body-centred cubic structure when it is at normal pressure but when the pressure is extremely high the iron acquires the shape of hexagonal with 12 points which is a close packed structure. Due to this close pack structure, iron remains solid in the inner core of earth.
Hence, option D is correct
A neuron can have consecutive action potentials (one right after the next) without a break in between. true or false
A neuron can have a consecutive (one right after the next) without a break in between FALSE.
EXPLANATION: Neuronal refractory period The refractory period in a neuron occurs after an action potential and generally lasts one millisecond.
What is a pathogen? A microorganism that helps in digestion A microorganism that causes diseases An organism which is harmed by fungi An organism which is harmed by a virus
A microorganism that can cause diseases
Answer:
A microorganism that can cause diseases
Explanation:
A pathogen is a micro-organism that can cause diseases. It is tiny and can infect you easily.
What actions help protect the land?
different laws actually help protect the land
Which statement is the best example of the law of conservation of energy?
A train traveling down a hill loses potential energy that is then stored in the ground.
An animal's energy is permanently stored in chemical bonds when it eats food.
Chemical energy in a car engine is destroyed as it burns and releases exhaust into the air.
Radiant energy from the Sun is not lost but transformed into other forms of energy.
The law of conservation of energy is where energy is distributed or transported to other objects or things, and energy is never destroyed or created. It would be C because it talks about while driving the thermal energy of the engine is being used and goes into the air. The others dont explain the transfer of energy as well. I hope this helps.
Answer: Option (d) is the correct answer.
Explanation:
According to law of conservation of energy, it is stated that energy can neither be created nor it can be destroyed but it can be converted into one form to another.
For example, radiant energy from the Sun is not lost but transformed into other forms of energy.
Energy can never remain stored forever in any substance or living thing.
Thus, we can conclude that the statement radiant energy from the Sun is not lost but transformed into other forms of energy, is the best example of the law of conservation of energy.
Which of the following is true?
A.
Eukaryotes do not contain cells.
B.
Eukaryotes are all unicellular.
C.
Eukaryotes can be unicellular or multicellular.
D.
Eukaryotes are all multicellular.
C. Eukaryotas can be unicellular or multi cellular.
Examples of unicellular Eukaryotas are amoebas, paramecium, and yeast! People are also made up of Eukaryotas cells.
Hope this helps!
Answer:
c. Eukaryotes can be unicellular or multicellular.
Explanation:
Eukaryotes are organisms that have a true nucleus separated from the cytoplasm. And in the cytoplasm they have many organelles. Some classic examples of these representatives (unicellular or multicellular) are:
Animals Plants Protozoa FungiAnd in the case of multicellular organisms, cells differentiate into specific tissues and organs, with complementary functionality to each other. What makes existence and functionality unreliable from each other.
PLEASEEEEEE I NEED HELP IN THIS QUESTION!!!!! 78 Points!!!!
The answer would be D
Recent research has found that on one island of the Galapagos two finch species interbred.This interbreeding may have resulted in a hybrid species that ultimately led to the extinction of one of the species Darwin discovered. They call this speciation in reverse, or despeciation. Based on what you know about speciation, why are these terms appropriate?
According to Darwin, Speciation is the process of formation of new species from a parental population. It occurs when the members of a similar population no longer interbreed one another to produce fertile offspring within their natural environment.
What are Species?Species may be defined as a group of organisms that can reproduce intrinsically with one another and construct fertile offspring.
A single species can generate multiple species via the mechanism of reproductive isolation.
These terms are more appropriate because they illustrate the difference in the behavior of two or more species on the basis of isolating mechanisms.
Therefore, it is well described above.
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Answer:
Speciation is the method by which unique species evolve from a common ancestor. In this case, two of these species that split from a common ancestor interbred and created a hybrid. This hybrid was apparently stronger and possibly better adapted to the environment, which led to extinction of a species formed by the initial speciation event.
Explanation:
this is the edmuntum sample answer