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Heterochromatin remains condensed in whi...

Heterochromatin remains condensed in which part of chromosome

A

secondary constrictions- I

B

secondary constrictions- II

C

Telomeres

D

Both a and b

Text Solution

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The correct Answer is:
A
(a) Each chrosome has a centromere (primary construction) but in some cases secondary construction is also present , more specifically called as 'secondary construction - II' . Its position is constant for particular chromosome heterochrmatin is condensed in this region . In man 'secondary construction - II ' is present in chrosome number `1, 10 , 13 , 16` and Y . Nuclear organizer is called 'secondary construction - I'.
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