Tusomesasa.

In a certain variety of pea plants, the allele for smooth ssed coat is dominant over the allele for wringled seed coat. Uring letter R to represent the allele for smooth seed coat, determine:

1. The genotypic ratio of the F1 generation if two heterozygous pea plants were crossed; (5 marks)
2. The total number of seeds with wrinkled seed coats if the total number of F1 seeds was 12,000. (2 marks)
3. State the advantage of using pea plants over eucalyptus in genetic studies. (1 mark)

Suggested resposponses

Monohybrid inheritance using seed coat texture in pea plants

(a) Genetic cross

(b) Calculate

;; Award 2 marks

(c) Easier to study many generations within a short period of time;