alleryStart learning →In the F2 of a YyRr self-cross, what proportion of offspring are expected to be round and green?
A1/16
B9/16
C3/16
D1/2
Answer & Solution
Correct answer: C. 3/16
1. Round is the dominant texture, so the chance of round is 3/4.
2. Green is the recessive colour, so the chance of green is 1/4.
3. Texture and colour assort independently, so the product rule applies.
4. Multiply: 3/4 times 1/4 equals 3/16.
5. Counting the square, three of the sixteen boxes give a round green seed, which agrees.
6. The class round and yellow is the larger 9/16 group, not this one.
7. The class wrinkled and green is the single 1/16 box.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.3 Laws of Inheritance_
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