Q.

Which one of the following generates new genetic combination leading to variation

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a

Vegetative reproduction

b

Parthenogenesis

c

Sexual reproduction

d

Nucellar polyembryony

answer is C.

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Detailed Solution

The sexual reproduction brings about variation through genetic recombination. Genetic recombination occurs in non-homologous chromosomes during crossing over of pachytene stage in meiotic cell division. Random union of gametes also contributes in forming new combinations of characters.
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Which one of the following generates new genetic combination leading to variation