MCQ
Sperm and egg nuclei fuse due to.
- ABase pairing of their $\text{DNA}$ and $\text{RNA}.$
- BFormation of hydrogen bonds.
- CMutual attraction due to differences in electrical charges.
- ✓Attraction of their protoplasts.
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$(a)$ Spermatogonia
$(b)$ Secondary spermatocyte
$(c)$ Primary spermatocyte
$(d)$ Spermatid
$R$ : Genetic modification of organisms can have unpredictable results when such organism are introduced into the ecosystem.