How many eggs do you think were released by the ovary of a female dog which gave birth to $6$ puppies?
Dogs and rodents are polyovulatory species. In these species, more than one ovum is released from the ovary at the time of ovulation. Hence, six eggs were released by the ovary of a female dog to produce six puppies.
First polar body is produced during the formation of
The cyclic period of sexual activity in non-human female mammals is called
The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$
Eunuchoidism is due to the failure of production of
The only human system that is derived from all the three germ layers is