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) 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. Determine the recombination frequency between the genes for fruit colour and fruit shape using the following formula (in picture). Show your work. Record your answer as a whole number percentage.

Name: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fr
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Description: 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 testcro

Concepts of Biology

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ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter7: The Cellular Basis Of Inheritance

Section: Chapter Questions

Problem 1ACQ: Figure 7.2 If a mutation occurs so that a fungus is no longer able to produce a minus mating type,...

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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)
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.
Determine the recombination frequency between the genes for fruit colour and fruit shape using the following formula (in picture).
Show your work. Record your answer as a whole number percentage.

Number of Recombinants
Recombination Frequency
x 100%
%3D
Total Progeny

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