In an experiment, Mendel grew 633 green pea plants with either wrinkled seed-coats (dominant) or smooth (recessive). If the ratio of the wrinkled seed-coat plants to the smooth seed-coat plants was 3:1, how many smooth seed-coat plants did he grow?

Question

Biology

Leon Mcintosh

16 January, 12:38

In an experiment, Mendel grew 633 green pea plants with either wrinkled seed-coats (dominant) or smooth (recessive). If the ratio of the wrinkled seed-coat plants to the smooth seed-coat plants was 3:1, how many smooth seed-coat plants did he grow?

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Braden Whitney · Answer 1

The answer is 158 smooth seed-coat plants.

The ratio of the wrinkled seed-coat plants to the smooth seed-coat plants is 3:1. Thus, if we have 4 seeds, 3 of them is wrinkled seed-coat plants and 1 is smooth seed-coat plants. Represented as percentage there are 75% (3/4) wrinkled seed-coat plants and 25% wrinkled seed-coat plants.

If there are 633 plants, there will be, again, 25% wrinkled seed-coat plants.

Since 25% of 633 is 158.25, there are 158 smooth seed-coat plants.