Heterogametic male condition does not occur in
Birds
Humans
Drosophila
Honey bee
(a) In birds usually female is designated as $ZW$, being heterogametic and male is designated as $ZZ$ being homogametic.
Massive amount of yolk present in the vegetal region of the egg, makes an egg
Meiosis can be observed in
When more than one sperm establish contact and penetrate into the egg, then it is called
Meroblastic cleavage refers to which type of division of egg
Which one of the following statements is incorrect about menstrual cycle?
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