CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0
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1/2
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1/4
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3/4
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1
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Detailed explanation-1: -So, the correct answer is ‘100%’
Detailed explanation-2: -Alleles are passed from the parents’ sex chromosomes to the sex chromosomes in the offspring. Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive.
Detailed explanation-3: -The cross of white eyed female with red eyed male gives red eyed females and white eyed males. Rarely this cross may give all white eyed females and red eyed males. This results from non-seperation of two homologous X chromosomes during anaphase I of meiosis.
Detailed explanation-4: -If the white-eyed male is crossed with the heterozygous female then 50% of their offspring are expected to have red eyes.
Detailed explanation-5: -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.