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which of the following statement is true for heterochromatinisation. it takes place during fertilisation early in the gestational development immediately before birth prior to the conset of puberty

which of the following statement is true for heterochromatinisation. it takes place
  1. during fertilisation
  2. early in the gestational development
  3. immediately before birth
  4. prior to the conset of puberty

Grade:12th pass

1 Answers

Gaurav
askIITians Faculty 164 Points
6 years ago
Hello Student
Correct Answer is 2. early in the gestation development
In homogametic XX female individuals one X-chromosome gets characteristically condensed and inactivated. Such chromatin material is called facultative heterochromatin. Since it becomes inactive in certain part of the life cycle and resumes activity before entering the germ line. This heterochromatinised in active chromatin body is called sex chromatin or Barr body.

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