Question

Many parents have more than one child. Explain why all their children are different.

Answer 1

The following are the reasons that all the children from the same parents appear different:

Explanation:

• The sex cells divide by the process of meiosis. In the process of meiosis, homologous chromosomes exchange segments of DNA from each other. Also, independent assortment occurs during meiosis which ensure that the fertilized embryo will be different from the parents as well as the siblings.

• Half of the DNA arises from the father and half from the mother at the time of fertilization due to which the children are different from each other as well as the parents.