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Answer:

Which evidence supports the endosymbiotic theory?

Mitochondria and chloroplasts have a separate, simpler DNA from the nucleus DNA of a eukaryotic cell. These organelles' DNA resembles the DNA of prokaryotic cells.

Mitochondria and chloroplasts self-replicate by a cell division process similar to binary fission, which is the way prokaryotes divide.

The way mitochondria and chloroplasts synthesize proteins within the eukaryote cell is more similar to prokaryotes than to eukaryotes.

There are living examples of prokaryotes, like cyanobacteria, that share similar features with both mitochondria and chloroplasts of eukaryotic cells.

Observations of prokaryotic cells engulfing other prokaryotic cells and the engulfed cells becoming the organelles have been recorded.

Two brothers who inherit different sets of alleles from their parents will likely have different Phenotypes.

The phenotype is described as the set of observable characteristics or traits of an organism.

The phenotype is the physical and/or physiological characteristics as a result of the two brothers who inherit different sets of alleles from their parents .  

The specific effects will depend on the specific alleles they inherit and how they interact with each other. They might have different hair color, eye color, height, susceptibility to certain diseases, and so on.

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Two brothers inheriting different sets of alleles from their parents results in genetic variation, influencing different phenotypic traits. This variation can produce different genotypes and phenotypes in siblings, due to the segregation and possible recombination of alleles during gamete formation.

When two brothers inherit different sets of alleles from their parents, it results in genetic variation between the siblings. This variation is fundamental to the diversity seen within a species. In terms of genetics and inheritance, if an individual with a cleft chin who is homozygous (BB) mates with an individual with a smooth chin, which is the recessive trait (bb), all their offspring will exhibit the dominant cleft chin phenotype. However, if the cleft-chinned individual is heterozygous (Bb), the offspring will have a 50% chance of a cleft chin and 50% chance of a smooth chin. This is because the phenomenon of alleles segregating during gamete formation—each parent contributing one allele to an offspring—can produce different genotypic combinations like BB, Bb, or bb, thereby influencing the offspring's phenotype.

In another example, two genes could either be linked, leading to parental types of gametes (AB or ab) or unlinked, giving rise to gametes like AB, Ab, aB, and ab in equal frequencies. When heterozygous individuals are crossed with homozygous recessive individuals, we can observe the occurrence of both parental and nonparental types, suggesting that while linkage is frequent, recombination also occurs. This illustrates how different allele combinations can produce varying genetic outcomes in siblings.

The correct answer is:

codominance

Explanation:

Codominance is a kind of dominance wherein the alleles of a gene set in a heterozygote are fully represented. This results in offspring with a phenotype that is not dominant nor recessive. A typical example telling codominance is the ABO blood group system.

Old technology instruments  last for a longer period of time where as a very few new technology base equipment's works well.

What is new technology in science?

Technology is otherwise a concept which deals with human and its surrounding by using knowledge, tools, crafts etc.

The evolutionary change in technology can act as a driving force of innovation, productivity, growth and development of world.

It is completely based on bot scientific and technical knowledge to resolve the problem and provide a solution for a question like use of internet, mobile, laptop etc.

The new technology can be up two types such as Sustaining technology

and Disruptive technology based on working methodology.

Sustaining technologies refers to old or preexisting technology which  is used to maintain a rate of improvement, which ultimately gives customer a satisfactory value.

On the other hand disruptive technology is completely a new technology which displaces the existing technology, it also lacks the scope refinement and performance.

Old technology is trustworthy but  new technology is not.

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Science is best described as a set of facts. The correct option is d.

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

In the best situations, it attains the higher degree of wisdom, which is philosophy's main goal.

Thought experiments are occasionally used in philosophy, but as they are conducted solely in the mind, they are not genuinely scientific.

An area of study that is not a science, particularly one that is not a natural science or a social science that is the subject of scientific investigation, is referred to as a "non-science." The best way to define science is as a body of facts.

Thus, the correct option is d.

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The answer to this statement is Mutualism.

A symbiotic relationship in which one organism is benefited by the other organism and the other organism does the same to the organisms on it is mutualism. This is beneficial for both the organisms. The fungus on the roots of the plant helps in absorption of nutrients from soil, while the fungus fulfill its nutritional need from the plants.

Answer:

Equinoxes are important in marking for change in the season.

Explanation:

The equinox is a marking for change in the seasons. The moment is important because it is the time of year when the day and the night are of almost exactly the same length. It's the starting of autumn or spring, that marks the starting of that season. It takes place twice a year around September 23 and March 21.

Thus, Equinoxes are important in marking for change in the season.

Answer:

A picture of an organism's chromosomes is a **karyotype**.

Answer:

Aerobic Cellular Respiration

Explanation:

Aerobic cellular respiration is the stepwise breakdown of glucose into CO2 and H2O through glycolysis, Kreb's cycle and The released energy is stored in the form of NADH and FADH2. These reducing powers drive the process of oxidative phosphorylation to produce as many as 36-38 ATPs. Hence, aerobic cellular respiration gives a long lasting supply of ATPs.

c is the answer

plato

Answer:

3

Explanation:

Most stars are main sequence stars as they spend about 90% of their lifetimes in this phase, which is confirmed by H-R diagram observations.

A is correct

The correct statement regarding the main sequence stars is: A) most stars are main sequence stars. Astronomical data confirms that about 90% of the stars observed in the sky are on the main sequence of an H-R diagram, which makes sense considering that stars spend the majority of their life in this phase, undergoing hydrogen fusion.

This is evidenced by the fact that stars are found in various spectral types ranging from O (most massive and most luminous) to M or L (least massive and least luminous) all aligned along the main sequence, representing different stellar masses.

The hot plates on an electric stove change electrical energy into heat and a small amount of light energy.

The hot plates on an electric stove change electrical energy into heat and a small amount of light energy.

An electric stove works by passing an electric current through a coil of wire in the heating element. This current produces heat due to resistance. The heat generated is then transferred to the pot and its contents, causing the food to cook.

The relationship between the elephants and the birds is called commensalism.

Commensalism is a relationship between two organisms of different species in which one organism benefits from the other, and the other is neither harmed nor benefited. This type of relationship usually occur between a larger host, and a smaller commensal (the organism that benefits from the relationship). The commensal can benefit by obtaining nutrients, or shelter from the host organism, which is not affected. From the question given, the small birds obtain their food from the elephants, and the elephants do not benefit, and are not harmed in the relationship. This relationship is an example of commensalism.

Answer:

Five different forces have influenced human evolution: natural selection, random genetic drift, mutation, population mating structure, and culture. All evolutionary biologists agree on the first three of these forces, although there have been disputes at times about the relative importance of each force.

Explanation: