GENERAL KNOWLEDGE

GK

HUMAN BODY AND REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Genetic variations are produced in
A
meiosis
B
clonning
C
sporulation
D
asexual reproduction
Explanation: 

Detailed explanation-1: -Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.

Detailed explanation-2: -During the prophase-I stage of meiosis, the event of crossing over occurs when two homologous chromosomes pair up and exchange segments of genetic material.

Detailed explanation-3: -During meiosis I, the random orientation of the maternal and paternal chromosomes can lead to variation. The exchange of genetic information between homologous chromosomes also induces variation. The random orientation of sister chromatids in meiosis II also generates genetic variation.

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