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Crossing Over and Recombinants
4. Genetic Mapping and Linkage / Crossing Over and Recombinants / Problem 1

In a study of the inheritance of two genes in pea plants, a researcher crossed a pure-breeding plant with yellow, round seeds (YYRR) to a pure-breeding plant with green, wrinkled seeds (yyrr). All of the F₁ offspring had yellow, round seeds (YyRr). The researcher then crossed the F₁ to each other to produce an F₂ generation.

The results of the F₂ generation are as follows:

Phenotype Number
Yellow, round 602
Yellow, wrinkled 191
Green, round 202
Green, wrinkled 605
Total 1600

Using the chi-square test, which of the following statements can be true?

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