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Q.

The Barr body is observed in which of the following?

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a

Basophils of females.

b

Neutrophils of female.

c

Neutrophils of male.

d

 Basophils of male.

answer is B.

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Detailed Solution

  • A Barr body is the latent X chromosome during a female vegetative cell, delivered inactive during a process called lyonization, in certain species during which sex is chosen by the availability of the W or Y chromosome rather than the diploidy of the Z or X.
  • Condensed and inactive chromosome present in female cells is known as Barr body.
  • In males (XY) no Barr body is observed.
  • Barr's body is present in females' neutrophils.

Hence, option B is the correct answer.

 

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