When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red - and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result?

Question

Addyson Hughes

Biology

15 January, 13:29

When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red - and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result?

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Answers (1)

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Belinda Mercer · Answer 1

Gene is present on the X chromosome.

Explanation:

The two main types of chromosomes are autosomes and sex chromosomes. Autosomes regulates the functioning of the body but do not play role in determining the sex of an individual. The sex chromosomes distinguishes between the male and female.

The linkage of sex chromosomes is present in Drosophila as well. The cross between the F1 generation leads to both the red and white eyed flies because the eye color gene is present on the X chromosome. The males contain only one X chromosome and the presence of recessive gene results in the white color whereas in females both the X chromosomes must contain recessive gene for the white color.

Thus, the answer is gene involved is on the X chromosome.