Question

9. A pure yellow-seeded pea plant is hybridised with a pure green-seeded pea plant. If the pea plants produced in the first filial generatio are selfed, then in second filial generation - (a) Half of the pea plants will hav yellow seeds and half will have green seeds (b) All the pea plants will have green seeds (c) 3/4" pea plants will have yellia seeds and 1/4" pea plants will have green seeds (d) All the pea plants will have yellow seed
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Answer 1

Explanation:

A is the only answer

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Answer 2

In the second generation- (c) 3/4" pea plants will have yellow seeds and 1/4" pea plants will have green seeds.

• Seed colour is one of the seven characters studied by Mendel in pea plants. Green seed and yellow seed are the two contrasting characters in which yellow is a dominant trait while green is a recessive one.
• When pure yellow seeded pea plant is crossed with pure green seeded pea plant, all the F1 generation had yellow seeds.
• When these yellow-seeded plants are self-crossed, three-fourths of them will have yellow seed while one-fourths of them will have green seed.
• In the F2 generation, the recessive trait is seen that was not observed in F1 generation. There was no blending of traits.