•    Genetics : Genetics is defined as the study of heridity and variation.
•    Heridity : It is the transfer of parental characteristics to offfspring from one generatioin to another while  Variation is the difference in characteristics within a given popuulation.

MANDELS FIRST LAW(Law of segregation)

It states that «  genes are responsible for the development of the individual and they are independently transmitted from one generation to another wihout undergoing any change ».