Question

(a) What is meant by 'heredity'? What are the units of heredity.
(b) State Mendel's first law of inheritance.

Answer 1

(a) The transmission of characters from the parents to their offsprings is called heredity. Genes are the units of heredity which transfer characteristics from parents to their offsprings during reproduction.

(b) Mendel's first law of inheritance states that the characteristics of an organism are determined by internal factors which occur in pairs. Only one of a pair of such factors can be present in a single gamete.