Get premium membership and access revision papers with marking schemes, video lessons and live classes.
A pea plant with round seeds was crossed with a pea plant that had wrinkled seed, the gene for round seeds is dominant over that for wrinkled seeds. Using letter R to represent the dominant gene, state:
(a) The genotype of parents if plant with round seed was heterozygous.
(b) The gametes produced by the round and wrinkled seed parents.
(c) The genotype and phenotype of F1 generation. Show your working.
(d) What is a test cross?