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In Mendel's d...

Question

In Mendel's dihybrid cross, the phenotypic ratio
was 9 : 3 : 3 : 1.
What does “9” indicates here?

A. Wrinkled yellow seeds
B. Wrinkled green seeds
C. Round yellow seeds
D. Round green seeds

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Solution

Ans. Option C (Round yellow seeds)

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Similar questions

Q. Mendel first crossed pure-bred pea plants having round -yellow seeds with pure-bred pea plants having wrinkled -green seeds and found that only round- yellow seeds were produced in the

F_{1}

generation. When

F_{1}

generation pea plants having round-yellow seeds were cross-bred by self-pollination, then peas having round-yellow seeds, round green seeds, wrinkled-yellow seeds and wrinkled -green seeds were produced. Mendel collected a total of 2160 seeds.

(a) What will be the number of
(i) round green seeds
(ii) wrinkled green seeds
(iii) round yellow seeds, and
(iv) wrinkled-yellow seeds?

Q. The phenotypic ratio obtained in the

F_{2}

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Q. The phenotypic ratio obtained in the

F_{2}

generation for a dihybrid cross between round yellow seeds and green wrinkled seeds is:

Q. Mendel first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only round-yellow seeds were produced in the F₁ generation. When F₁ generation pea plants having round-yellow seeds were cross-bred by self pollination, then peas having round-yellow seeds, round green seeds, wrinkled-yellow seeds and wrinkled-green seeds were produced. Mendel collected a total of 2160 seeds.
(a) What will be the number of (i) round green seeds (ii) wrinkled green seeds (iii) round yellow seeds, and (iv) wrinkled-yellow seeds?
(b) Which 'ratio' as established by Mendel have you made use of in answering the part (a) above?

Q. Dihybrid cross is made between RRYY (yellow round seed) and yyrr (wrinkled green seed) of Pea.

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