Sponsor Area

Human Reproduction

Question
CBSEENBI12001346

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.

Solution
Ovary release one egg every month.

In case of identical twins number of egg released is is one. In this case the  egg is cleaved into two giving rise to two young ones. Since they are derived from the same cell the twins are genetically identical.

In fraternal twins. There are two egg cells that fertilize and form the two young ones and thus the twins are non identical.