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What do you understand by chromosomal …

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What do you understand by chromosomal aberration ?explain the following: Duplication Deletion Inversion

Posted by Divya Rani 6 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Meghna Thapar 6 years, 1 month ago

The change in chromosome is due to alteration in genetic material through loss, gain or rearrangement of a particular segment. Such changes are called chromosomal aberrations. The modification brings about chromosomal mutations. i. Deletion - It is a loss of segment of chromosome. After break the part without centromere is lost. ii. Duplication - A segment of chromosome is repeated twice, i.e., duplicated. iii. Inversion - In this a chromosome segment is dropped out as a result of two breaks but it is reformed between two breaks after rotating through 1800o.

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