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Q.

Identify the sex determination type in which both males and females have same number of chromosomes

(a) XX-XY

(b) ZW-ZZ

(c) XX-XO

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a

Only (b)

b

Only (a)

c

Both (a) and (b)

d

Only (c)

answer is D.

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Detailed Solution

Both males and females have same number of chromosomes in the following sex determination methods:

  • XX-XY
  • ZW-ZZ

In XX-XO type, male has only one sex chromosome while females have two in their gametes.

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