(a) What is variation? (b) State five advantages of variation within a species. (c) In a tabular form, outline four differences between continuous and disco...

 (a) What is variation?

(b) State five advantages of variation within a species.

(c) In a tabular form, outline four differences between continuous and discontinuous variations.

(d) Explain the following terms:
(i) Sex-linked characters
(ii) Co-dominance
(iii) Hybrid vigour