MCQ
Melotic division of the secondary oocyte is completed
- ✓At the time of fusion of a sperm with an ovum
- BPrior to ovulation
- CAt the time of copulation
- DAfter zygote formation
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$(a)$ The cattle egret and grazing cattle
$(b)$ Barnacle balanus and Barnacle chathamalus
$(c)$ Goat and Abingdon turtle from Galapagosisland
$(d)$ Barnacles growing on the back of whale
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