Use the following information to answer the next four questions. Tomato Plants 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 Part A: Record the phenotypes and the phenotype ratio in lowest terms. Part B: Convert the expected phenotypic ratio from Part A into the expected probability for each of the four phenotypes and record them in the table below. Calculate the probability for each of the four phenotypes observed in the cross from the data presented at the beginning of the question by dividing the number of progeny in each class by the total number of progeny and record these in the table below. (Probability = Number of Progeny in Phenotype Class ÷ Total Progeny) 3. Compare the expected probabilities of each phenotype to the observed probabilities. Are the gene for fruit colour and the gene for fruit shape assorting independently? Explain.

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Description: Use the following information to answer the next four questions. Tomato Plants 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

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Use the following information to answer the next four questions.

Tomato Plants
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

Part A: Record the phenotypes and the phenotype ratio in lowest terms.

Part B:

Convert the expected phenotypic ratio from Part A into the expected probability for each of the four phenotypes and record them in the table below.
Calculate the probability for each of the four phenotypes observed in the cross from the data presented at the beginning of the question by dividing the number of progeny in each class by the total number of progeny and record these in the table below.

(Probability = Number of Progeny in Phenotype Class ÷ Total Progeny)

3. Compare the expected probabilities of each phenotype to the observed probabilities. Are the gene for fruit colour and the gene for fruit shape assorting independently? Explain.

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