The gestation period of elephants is about
$11$ months
$10$ months
$15$ months
$22$ months
(d)About $669$ days.
In mammalian sperm, spirally arranged mitochondria are present in
Given a diagram showing a portion of a seminiferous tubule. Identify the marked alphbates
The rate of cleavage is inversely proportional to the duration of
Eggs of reptiles and birds are
Which one of the following is the incorrect match of the events occurring during menstrual cycle?
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