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marshall27 [118]
2 years ago
15

In flies, red eyes (r) are dominant to brown eyes (r). a heterozygous fly is crossed with homozygous recessive fly.

Biology
1 answer:
nadezda [96]2 years ago
7 0

<u>50%</u>  of offspring will have brown eyes

Explanation:

A heterozygous individual will have the genotype <em>Rr </em>while an individual who is homozygous recessive will have the genotype <em>rr.</em> A cross between the two will result in offspring with phenotype <em>Rr</em> and <em>rr</em> in the ratio of 1 : 1. This can be observed from the Punnet square attached.  The same is the case for the phenotype. The ration of brown eyes to red eyes will be approximately 1 : 1

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4 0
3 years ago
How does the law of conservation of energy apple to virbatioin
Zinaida [17]

Answer:

As objects move around over time, the energy associated with them—e.g., kinetic, gravitational potential, heat—might change forms, but if energy is conserved, then the total will remain the same. Conservation of energy applies only to isolated systems.

Explanation:

5 0
3 years ago
Animals cannot synthesize tyrosine from shikimate-3P because they lack EPSP synthase. However, tyrosine is listed as a non-essen
Marina86 [1]

Tyrosine is listed as a non-essential amino acid because it can be synthesised from the essential amino acid phenylalanine.

<u>Explanation:</u>

Amino acids are classified as essential and non essential according to whether they can be synthesized in the body itself or should be supplied by the diet. Essential amino acids cannot be synthesized in the body of the organism and thus can be obtained only from the diet. In the case of human beings, valine, phenylalanine, methionine etc are examples of essential amino acids.

Non essential amino acids can be synthesized within the body of the organism. Thus they need not be supplied by the diet. Alanine, aspartic acid etc are some of the non essential amino acids in human beings. It is given here that animals cannot synthesize tyrosine from shikimate-3p due to the lack of EPSP synthase.

But the amino acid tyrosine can be synthesized from the amino acid phenylalanine which is an essential amino acid. Thus tyrosine will be a non-essential amino acid.

8 0
2 years ago
Which is biotic? water temperature beeswax snow
Luden [163]
Bees wax is biotic. 

Biotic means something that is related to or resulted from living things. Bio means life. Bees wax are produced by honey bees. It comes from a living thing, thus, it is biotic.

Water, temperature, and snow are all abiotic. Abiotic means "no life" or nonliving. They are not derived from any living thing. 



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3 years ago
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