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What Are Sex Chromosomes?

Which of the ...

Question

Which of the following trait is sex-linked in ?

A

Eye color

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B

Brown body

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C

Curly wings

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D

Body length

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Solution

The correct option is A
Eye color

The gene that controls eye color in is present on the sex chromosome. Hence, it expresses differently in males and females. Therefore, this trait is said to be sex linked.

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Similar questions

Q. Assertion (A): In Drosophila, the recombination frequency of the genes responsible for the eye colour and wing size is more than that of body colour and eye colour.
Reason (R): In Drosophila, the gene responsible for eye colour is more closely located to the gene for body colour as compared to the gene for wing size.
[0.7 mark]

Q. In fruit fly genes for red, eosin and white eye colour are allelic and sex linked. Gene for yellow body is linked with white eye with a cross over value of 1.5%. The probable crossover value between eosin and yellow body allele would be then

Q. Given below are some statements related to the dihybrid cross performed by Morgan (considering the body colour and eye colour as the two characters for study). Which of the following would you choose to find out the location of the gene for body colour?

I. Deviation of

F_{2}

progeny from the usual 9:3:3:1 ratio
II. Appearance of more parental combinations in

F_{2}

generation
III. Appearance of more non-parental combinations in

F_{2}

generation
IV. Linked inheritance of body colour and eye colour in Drosophila

Q. One of the following traits cannot be inherited. This one is :
(a) colour of eyes
(b) colour of skin
(c) size of body
(d) nature of hair

Q. When Morgan chose body colour and eye colour to be the characters for dihybrid crosses in Drosophila, he obtained a greater percentage of parental traits in the progeny. Which of the following inferences can be drawn from the above observation?

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