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 generation 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​

Answer 1

Explanation:

a is the answer

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Answer 2

If the pea plants produced in the first filial generation are selfed, then in second filial generation (a) Half of the pea plants will have yellow seeds and half will have green seeds.

Explanation:

• 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.
• A Pea Plant Pure for Yellow Seed Colour is Crossed with a Pea Plant Pure for Green Seed Colour in F1 generation all Pea Plants Were with Yellow Seeds.
• In the F1 generation the progenies obtained are heterozygous yellow round since yellow and round are dominant characters.
• The ratio of progeny is 9:3:3:1.