A cross was made between pure breeding pea plants, one with round and green seeds and the other with wrinkled and yellow seeds.
(a) Write the phenotype of $F_{1}$ progeny. Give reason for your answer.
(b) Write the different types of $F_{2}$ progeny obtained along with their ratio when $F_{1}$ progeny was selfed.

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Solution

(a) F $_{1}$ progeny: Round and Yellow seeds. A cross between two pure varieties obtains hybrid progeny exhibiting only dominant phenotype (law of dominance).
(b) The different types of progeny obtained with the ratio is as follows;
9 round and yellow : 3 wrinkled and yellow : 3 round and green : 1 wrinkled and green.

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Question 11
Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have a new combination of characters. Choose the new combination of the following.
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(c) (ii) and (iii)
(d) (i) and (iii)

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A cross was made between pure breeding pea plants, one with round and green seeds and the other with wrinkled and yellow seeds.(a) Write the phenotype of F1 progeny. Give reason for your answer.(b) Write the different types of F2 progeny obtained along with their ratio when F1 progeny was selfed.