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Non-disjunction in meiosis results in...

Non-disjunction in meiosis results in

A

trisomy

B

normal diploid

C

gene mutation

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Non-disjunction in meiosis results in trisomy, i.e. the presence of an extra chromosome. Such individuals have 47 chromosomes instead of 46. Some examples of such abnormalities include Down's syndrome (21-trisomy), Patau's syndrome (13-trisomy) and Edward's syndrome (18-trisomy).
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Meiosis is

Meiosis is

Statement (s) Nondisjunction is the failure of paired chromosomes to segreagate during the metaphase of meiotic division of fametogenesis Reason (R ) Non disjunction results in production of abnormal gametes

In animals meiotic division occurs during gamete formation. This gametic meiosis results in