a dihybrid cross between 2 heterozygous parents produces a phenotypic ratio of?

A dihybrid cross between two heterozygous parents produces a phenotypic ratio of 9:3:3:1, which reflects the independent assortment of genes and dominance of certain traits.

A dihybrid cross between two heterozygous parents (e.g., GgYy x GgYy) involves two genes and produces offspring with a combination of traits that follow a phenotypic ratio of 9:3:3:1. This means that in the context of pea plants with two traits such as seed shape and color, 9/16 of the plants would exhibit both dominant traits (round, yellow seeds), 3/16 would exhibit one dominant and one recessive trait (round, green seeds or wrinkled, yellow seeds), and 1/16 would exhibit both recessive traits (wrinkled, green seeds). These proportions can be visualized using a Punnett square and result from the principles of independent assortment and dominance in genetics.

Vacuoles, ribosomes, and mitochondria are all examples of..........

organs.

cell functions.

structures.

organelles.

which one?

Smallpox is a virus that causes a rash that then turns into painful blisters. The last known case of smallpox was in 1977. What is the best explanation for the eradication of smallpox? People are exercising more than they used to. Genetic testing determines who is more prone to smallpox. There was an increase in antibacterial products. A vaccine was developed.

If the corpus callosum is severed, how might this affect the way we perceive the world?

how does light travel?
A. light only travels in a vacuum and travels faster when the sound is moving
B. light on only travels in a medium and light travels faster when a Sound Source is stationary
C. light can travel in a vacuum in the speed varies depending on whether the source is moving or stationary
D. light can travel in the air or a vacuum and the speed is constant weather the light source is stationary or moving

Explain a chromosome deletion and the effect it can have on a human.

Why does darkness affect the light-independent reactions of photosynthesis?

Plants stop their daytime activities and rest during the night much like animals do.

Light independent reactions need more heat energy than nighttime temperatures often provide.

Light independent reactions require the energy gathered in the thylakoids.

Mitochondria produce sugars more effectively in the darkness than chloroplasts do.

plz help<3
What 3 letters correspond with (met) amino acid which is the starting point for translation?

Question 2 options:

AUG


CTU


GUA


ATC

recessive sex-linked traits are more common in males because

Ice and steam exist as two different states of matter. what is one way you can tell ice apart from steam?

What is a single celled organism absorbed by?

An animal cell is growing and is active. The cell is going through which subphase of interphase?
a)G1
b)G2
c)S

Which example describes an inherited trait that cannot be determined by observing an individual?









A.

blood type








B.

skull size








C.

finger length








D.

skin color

Algae uses all the energy in sunlight to perform photosynthesis.
true or false

There are two main functions for polysaccharides in living things. Discuss these two functions, and how the structures of polysaccharide molecules support these functions.

Now I know that all polysaccharides are made up of the same monomer, glucose. Is this question essentially asking me the use of glucose throughout different organisms?

Which of the following conditions are NOT applicable to the Hardy-Weinberg Equilibrium?
Absence of natural selection
Stable genome
Assortive mating

How can you distinguish the different mitotic steps from each other?

What happens to a tadpole after about 70 days of life?
a. loses its tail
b. develops legs
c. leaves the water
d. is a full adult frog

Which would you expect to see in a family that carries an x-linked recessive trait?

1.more females than males express the trait
2. more males that flames express the trait
3. both express equal amount of trait

Which describes a disruption in the water cycle that could affect photosynthesis?

Heat causes an excess of transpiration.

Before a woman is born her body produces the egg cells that she will have for the rest of her life. The production of egg cells is a result of 2 divisions, which create eggs with 23 chromosomes. The process of producing eggs is called __________________.

6 letter word: a stack of thylakoids in a chloroplast

Angelina observes that her gardener cuts the tips of her ornamental plants at regular intervals of about 10–15 days. When she asks him why he does this, he tells her that this allows the tree to grow faster and bushier. How would you explain this scientifically?

Which structure of the cell contains the cell's genetic information?

An organism's _____ is its biological role in the ecosystem. habitat niche life history community

What is the reason behind the high surface tension of water?

The density of the water molecule helps it to cohere to nearby water molecules, forming a skin over it.
The polarity of the water molecule helps it to cohere to nearby water molecules, forming a skin over it.
The weight of the water molecule helps it to cohere to nearby water molecules, forming a skin over it.

Charles Darwin studied finches on the Galapagos Islands. While the finches on all the islands came from the same ancestors, the distance between the islands was too great to allow finches from different islands to interbreed. Over time, the size of the finches on the different islands remained the same, but the shape and size of their beaks changed, as shown here. This adaptation helped the finches find food on their particular island. The change in the size and shape of the finches’ beaks was MOST LIKELY caused by A) geographic isolation B) a change in climate. C) endangerment of the species. D) a decrease in the mutation rate.

This is a substance used to identify the presence of protein. it is a blue solution that changes to pink-purple in the presence of proteins.

The Ring of Fire is _______. a. the arc stretching from New Zealand to the Aleutian Islands b. composed of over 75% of the world’s active and dormant volcanoes c. can be found along the coast of North and South America d. all of the above

30 POINTS DONT ANSWER IF YOU DONT KNOW THE ANSWER FOR SURE

In the gene TATTCATTGTTA—TGATTT—ATTCG, CATTGTTA encodes for pepsin, a digestive enzyme. The rest of the sequence doesn’t code for any protein. Which sequence contains a mutation that will affect the formation of pepsin?

A. TATTCATTCATTA—TGATTT—ATTCG
B. TATTCATTGTTA—TGACTTT—ATTCG
C. TATTCATTGTTA—TGATTT—ATTGGCG
D. TATTCATTGTTA—TGAT—ATTCG
E. TGCATTCATTGTTA—TGATTT—ATTCG

• In what way do you think the location of the foramen magnum relates to the movement of each species? ...?