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JIPMER 2015
Exam
JIPMER
Year
2015
Subject
Zoology
Chapter
Principles of Inheritance and Variation

JIPMER 2015 · Zoology · Principles of Inheritance and Variation

In pea plants, yellow seeds are dominant to green. If a...

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants could you expect in F1\mathrm{F}_1-generation.

Options

  1. A9:19: 1
  2. B1:31: 3
  3. C3:13: 1
  4. D50:5050: 50

Correct answer

D. 50:5050: 50

Step-by-step solution

Yellow seeds are dominant is green (Y). So, a heterozygous yellow seeded plant will have the genotype of (Y,y)(\mathrm{Y}, \mathrm{y}) and a green seeded plant will have genotype (yy). When these plants are crossed, the F1\mathrm{F}_1-generation will have the ratio of yellow : green as 50 : 50 .
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