How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?
An ovary releases an egg every month. When two babies are produced in succession, they are called twins. Generally, twins are produced from a single egg by the separation of early blastomeres resulting from the first zygotic cleavage. As a result, the young ones formed will have the same genetic make- up and are thus, called identical twins
The placenta helps in the maintenance of pregnancy by secreting a hormone, known as
The structure formed after release of ova from graafian follicles and secretory in nature, is
During menstruation the level of progesterone in blood is
Corpus luteum in mammals is present in
The menstrual cycle in normal adult woman is of