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Question
In Drosophila formation of gynandromorph and their cytological explanation provide best evidence that
In Drosophila formation of gynandromorph and their cytological explanation provide best evidence that
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Solution
The correct option is C Y chromosome does not play any role in sex determination.
Gynandromorphs are the individual with female characters in one part of body and male in other parts. They are the result of loss of one X chromosome from a cell during first mitotic division in zygote. This causes 1/2 cell of a two-celled proembryo to have 2A+X (X/A= 0.5) and other half of the cells to have 2A+XX (X/A=1) with half female and half male body. It shows that Y chromosome does not play any role in sex determination in Drosophila. Thus, option C is the correct answer.
Gynandromorphs are the individual with female characters in one part of body and male in other parts. They are the result of loss of one X chromosome from a cell during first mitotic division in zygote. This causes 1/2 cell of a two-celled proembryo to have 2A+X (X/A= 0.5) and other half of the cells to have 2A+XX (X/A=1) with half female and half male body. It shows that Y chromosome does not play any role in sex determination in Drosophila. Thus, option C is the correct answer.
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