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3 years ago

White eyes are recessive in flies. can two red eyed flies have white eyed offspring

Biology

1 answer:

MissTica3 years ago

6 0

Answer:

Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.

Explanation:

For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.

In the case of the characteristic eye color of the flies :

Red eye (R) is dominant trait.
White eyes (r) is the recessive trait.

When both parents are heterozygous, their genotype is Rr

In Punnett Square it can see the result of the crossing of these individuals:

Punnett Square :

Rr X Rr 

Alleles R r

R RR Rr

r Rr rr

In the offspring, the probabilities are:

50% heterozygous individuals Rr, with red eye phenotype.
25% pure dominant individuals RR, with red eyes
25% individuals with the recessive rr genotype, white eyes.

This is the possibility of two red-eyed flies having white-eyed offspring.

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The question is incomplete. The complete question is:

Question: A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?

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Answer:

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Answer:

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