(a) (i) What is a gene?
(ii) Differentiate between the terms genotype and phenotype

 (b) Explain the following terms:
(i) hybrid
(ii) pure breeding
(iii) nucleotide.

(c) In garden pea seeds, smooth seed coat is dominant over rough seed coat. With the aid of a genetic diagram, determine the result expected if a homozygous rough pea is crossed with a smooth seed coat plant whose parents were rough coated.