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Q.

Which of the following is incorrect about Drosophila.

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a

Genes white eye and miniature wing are unlinked

b

Genes white eye and yellow body are very tightly linked

c

Body and eye colour genes are X – Linked

d

Genes red eye and large wings (wild) are loosely linked (incompletely linked)

answer is C.

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Detailed Solution

 Genes locate don the same chromosome ar said to be linked irrespective of the distance between them.

Closely located genes are said to be tightly linked while distantly located genes ar said to be loosely linked.

The genes for  eye color and  wing size are located on the X -chromosome.Sot hey ar linked .however,they  are loosely linked since the distance between them is, little when compared to the genes coding for body color and eye color.

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