In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and round fruit (FFRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). The red and round F1 progeny were then testcrossed to plants that were homozygous recessive for both genes (ffrr) with the following results: Phenotypes Number of Offspring Red and round 2 255 Red and oval 290 Yellow and round 310 Yellow and oval 2 145 1. Complete a Punnett square to determine the expected testcross progeny on the basis of Mendel’s Law of Independent Assortment. 2. Record the phenotypes and the phenotype ratio in lowest terms.

In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and round fruit (FFRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). The red and round F1 progeny were then testcrossed to plants that were homozygous recessive for both genes (ffrr) with the following results: Phenotypes Number of Offspring Red and round 2 255 Red and oval 290 Yellow and round 310 Yellow and oval 2 145 1. Complete a Punnett square to determine the expected testcross progeny on the basis of Mendel’s Law of Independent Assortment. 2. Record the phenotypes and the phenotype ratio in lowest terms.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter3: Transmission Of Genes From Generation To Generation

Section: Chapter Questions

Problem 15QP: More Crosses with Pea Plants: The Principle of Independent Assortment Two traits are examined...

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Phenotypes	Number of Offspring
Red and round	2 255
Red and oval	290
Yellow and round	310
Yellow and oval	2 145

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