Genetics is the study of Heredity. Heredity deals with the transmissions of characteristics from one generation to another.
Observable differences within a species are called variations. There arte two types of variations.
(a) Continuous variations. Observable differences within a species with intermediate forms are called continuous variations. E.g. height of students in a class, intelligence of students, Skin color. This is due to the result of two factors.
- The genes that are inherited by an individual.
- The effect of environment on the individual organisms.
The environmental factors are