(a) Define the following terms: (i) gene (ii) gene mutation. (b) Name two structures each of plants and animals where the following processes take place: (i...

(a) Define the following terms:
(i) gene
(ii) gene mutation.

(b) Name two structures each of plants and animals where the following processes take place:
(i) mitosis
(ii) meiosis.

(c) State four advantages a farmer may hope to derive in cross breeding two different breeds of cows.

(d) State three applications of the knowledge of genetics in medicine.