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Q.

Which of these pairs is correctly matched?

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a

Female heterogamety - Humans

b

2n + 1 of sex chromosome – Turner’s Syndrome

c

2n + 1 chromosomes - Trisomy

d

Male heterogamety - Birds

answer is C.

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Detailed Solution

Trisomy condition (addition of an extra copy of chromosome) : 2n+1Turner's Syndrome is loss of a sec chromosome (XO) : 2n -1Female heterogamety : BirdsMale heterogamety : Humans
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