A pea plant with round seeds having large starch grains is crossed with another pure pea plant with wrinkled seeds having small starch grains. The $F_{1}$ heterozygotes formed are self pollinated. What is the phenotypic ratio of plants with round seeds and intermediate starch grains to plants with wrinkled seeds and larger starch grains expected in $F_{2}$ generation

5 : 6

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2 : 3

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3 : 4

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6 : 1

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Solution

The correct option is D 6 : 1

A pea plant with round seeds having large starch grains is crossed with another pea plant with wrinkled seeds having small starch grains. The F1 heterozygotes formed self-pollinated. The phenotypic ratio of plants with round seeds and intermediate starch grains to plants with wrinkled seeds and larger starch grains in F2 generation are 6:1.
So, the correct option is ‘6:1’

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Similar questions

Q. In garden pea plant, when a plant with intermediate sized starch grains is crossed with a plant with small sized starch grains, what is the probability of offsprings with round shaped seeds and large sized starch grains?

Q. A heterozygous round seeded pea plant is crossed with wrinkled seeded pea plant. How many plants produces intermediate sized starch grain out of 2000 progenies obtained?

Q. In garden pea plant, a pure line with round seeds(RR) is crossed with a pure line having wrinkled seeds (rr). The ratio of round seed plants to wrinkled seed plants in

F_{2}

generation will be?

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?

(b) Which 'ratio' as established by Mendel have you made use of in answering the part (a) above?

A cross between pure-bred pea plants having yellow round seeds with those having green wrinkled seeds would produce $F_{1}$ plants with:

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