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4.Principles of Inheritance and Variation
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The sex chromosomes in females are

A

$XX$

B

$XY$

C

$YY$

D

$XXY$

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Solution

(a)The female individuals are homogametic with chromosome cosntitution $44A + xx$ and male individuals are heterogametic with chromosome constitution $44 + xy.$

Standard 12
Biology
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