In fruit flies, the allele for white eyes is recessive to the allele for red eyes. In a generation of fruit flies, 45 males with white eyes, 46 females with white eyes, 44 males with red eyes, and 47 females with red eyes are produced. Which of the following is the best conclusion you can make about the parents of this generation?

A.) One parent was heterozygous for eye color and the other was homozygous with red eyes.

B.) Both parents were homozygous with red eyes.

C.) One parent had white eyes and the other was heterozygous for eye color.

D.) Both parents were heterozygous for eye color.

Question

Margaret Gentry

Biology

19 September, 14:35

In fruit flies, the allele for white eyes is recessive to the allele for red eyes. In a generation of fruit flies, 45 males with white eyes, 46 females with white eyes, 44 males with red eyes, and 47 females with red eyes are produced. Which of the following is the best conclusion you can make about the parents of this generation?

A.) One parent was heterozygous for eye color and the other was homozygous with red eyes.

B.) Both parents were homozygous with red eyes.

C.) One parent had white eyes and the other was heterozygous for eye color.

D.) Both parents were heterozygous for eye color.

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Answers (1)

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Abraham Bishop · Answer 1

heterozygous / homozygous refers to whether both alleles for a gene are the same. The organism is homozygous if both alleles are the same - that is, either both are dominant or both are recessive. The organism is heterozygous if the alleles are different - that is, if one allele is dominant and the other allele is recessive ...

the answer to the questions is A. One parent was heterozygous for eye color and the other was homozygous with red eyes.