In a mating of pea plants, the F $_{1}$ generation yielded offsprings in the following quantities: 595 yellow smooth: 198 green smooth: 198 yellow wrinkled: 66 green wrinkled.
What were the likely genotypes of the P generation that produced these results?

YYRR x yyrr

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YyRr x YyRr

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yyrr X YyRr

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YYRr x yyrr

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YYRR x yyRr

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Solution

The correct option is B YyRr x YyRr
The given example is of a dihybrid cross involving seed color and seed shape. The number of plants obtained in the $F_{1}$ generation were 595 yellow smooth: 198 green smooth: 198 yellow wrinkled: 66 green wrinkled. This count can be approximated to the phenotypic ratio 9:3:3:1. This ratio can be obtained by crossing the plants of the P generation with genotype YyRr x YyRr. Thus the correct answer is option B.

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In a mating of pea plants, the F1 generation yielded offsprings in the following quantities: 595 yellow smooth: 198 green smooth: 198 yellow wrinkled: 66 green wrinkled.What were the likely genotypes of the P generation that produced these results?

In a mating of pea plants, the F $_{1}$ generation yielded offsprings in the following quantities: 595 yellow smooth: 198 green smooth: 198 yellow wrinkled: 66 green wrinkled.
What were the likely genotypes of the P generation that produced these results?