The pea plant with round shaped seeds with yellow colour seed (RRYY) crossed with another pea plant showing wrinkled shape with green cotyledons (rryy). The results of progeny in $F_{2}$ generation are produced in the following number.
i) Heterozygous for both shape and colour of seeds ......... number.
ii) Dominant for colour, but recessive for shape ........ number.
iii) Homozygous for both shape and colour of seeds ......... number.
iv) Heterozygous for seed shape only ........ number.

i-2, ii-4, iii-3, iv-8

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i- 4, ii-2, iii-3, iv-8

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i- 3, ii-4, iii-8, iv-2

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i- 4, ii-3, iii-2, iv-8

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Solution

The correct option is C i- 4, ii-3, iii-2, iv-8
When pea plant with round shaped seeds with yellow colour seed (RRYY) is crossed with another pea plant showing wrinkled shape with green cotyledons (rryy), the F $_{1}$ generation will have round shaped seeds with yellow colour seed (RrYy) progeny. When this is cross, the F $_{2}$ generation will have progeny in the ratio of 9 (round shaped seeds with yellow colour seed) : 3 (wrinkled shaped seeds with yellow colour seed) : 3 (round shaped seeds with green colour seed) : 1 (wrinkled shape with green cotyledons).
Thus, the correct answer is option D.

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