HEREDITY
MULTIPLE ALLELES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 female white eyes, 1 female red-eyes, 1 male white eyes, 1 male red-eyes
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2 female red eyes, 2 males white eyes
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2 female white eyes, 2 males red eyes
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2 female red eyes, 1 male red eyes, 1 male white eyes
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Detailed explanation-1: -In fruit flies, the gene for eye color is carried on the X chromosome which is a sex chromosome (sex-linked). The allele for red eyes is dominant over the allele for white eyes. If a white-eyed female fruit fly is mated with a red-eyed male, predict the possible offspring.
Detailed explanation-2: -In fruit flies, the wild-type eye color is red (XW) and is dominant to white eye color (Xw). Because this eye-color gene is located on the X chromosome only, reciprocal crosses do not produce the same offspring ratios. Males are said to be hemizygous, because they have only one allele for any X-linked characteristic.
Detailed explanation-3: -The eye color gene is located on the X chromosome (one of the sex determining chromosomes of Drosophila). White eye color is recessive. When a red eyed male mates with white eyed females, their daughters will have red eyes, but their sons will have white eyes.
Detailed explanation-4: -by Biology experts to help you in doubts & scoring excellent marks in Class 12 exams. A homozygous red eyed female was mated with white eyed male, a daughter from ‘F (1)‘ generation ws also mated with white-eyed male. Red eye is dominant over white eye and is a sex linked trait. In the progeny from this second mating.