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kolbaska11 [484]
3 years ago
7

How does a virus infect a host cell? A. It lays its lipids on a host cell. B. It lays its proteins on a host cell. C. It injects

its nucleic acids into a host cell. D. It injects its carbohydrates into a host cell.
Biology
2 answers:
Irina-Kira [14]3 years ago
6 0
The answer is c, nueclic acids.
Svetradugi [14.3K]3 years ago
5 0

C. It injects its nucleic acids into a host cell.

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When a sucrose molecule is digested which monosaccharide are produced
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The monosaccharides that are produced when sucrose is digested would be glucose and fructose.
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What type of molecule can easily diffuse through the plasma membrane without any help? Why?
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Any change in the speed or direction of an object is called blank
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Geographic range for amoeba?
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3 years ago
In a dihybrid cross of two heterozygous individuals, you expect a 9:3:3:1 phenotypic ratio in the offspring, but observe a ratio
almond37 [142]

Answer:

e. Epistatic interaction of the two genes

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The 9:7 ratio is typical of the Duplicate Recessive Epistasis.

The expected phenotypic ratiio of the offsrping of a dihybrid cross is:

9 A_B_

3 A_bb

3 aaB_

1 aabb

In the Duplicate Recessive Epistasis, the A_bb, aaB_ and aabb individuals all have the same phenotype, making for the ratio 9:7. What those three genotypes have in common is that in all of them at least one of the two genes  is homozygous recessive (either <em>aa</em> or <em>bb</em>).

This usually happens one the products of genes A and B are enzymes of the same metabolic pathway.

Whenever both A and B are present, the pathway can produce the final product and a certain phenotype. However, if any of the dominant alleles is missing, the enzyme is not produced and therefore the final product of pathway is not produced, giving the other phenotype.

3 0
3 years ago
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