Two true-breeding white strains of the plantIllegitimati noncarborundum were mated, and theF1 progeny were all white. When the F1 plants wereallowed to self-fertilize, 126 white-flowered and33 purple-flowered F2 plants grew.a. How would you describe inheritance of flowercolor? Describe how specific alleles influence eachother and therefore affect phenotype.b. A white F2 plant is allowed to self-fertilize. Ofthe progeny, 3/4 are white-flowered, and 1/4 are purple-flowered. What is the genotype of the whiteF2 plant?c. A purple F2 plant is allowed to self-fertilize. Of theprogeny, 3/4 are purple-flowered, and 1/4 arewhite-flowered. What is the genotype of the purpleF2 plant?d. Two white F2 plants are crossed with each other.Of the progeny, 1/2 are purple-flowered, and 1/2are white-flowered. What are the genotypes of thetwo white F2 plants?

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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Two true-breeding white strains of the plant
Illegitimati noncarborundum were mated, and the
F1 progeny were all white. When the F1 plants were
allowed to self-fertilize, 126 white-flowered and
33 purple-flowered F2 plants grew.
a. How would you describe inheritance of flower
color? Describe how specific alleles influence each
other and therefore affect phenotype.
b. A white F2 plant is allowed to self-fertilize. Of
the progeny, 3/4 are white-flowered, and 1/4 are purple-flowered. What is the genotype of the white
F2 plant?
c. A purple F2 plant is allowed to self-fertilize. Of the
progeny, 3/4 are purple-flowered, and 1/4 are
white-flowered. What is the genotype of the purple
F2 plant?
d. Two white F2 plants are crossed with each other.
Of the progeny, 1/2 are purple-flowered, and 1/2
are white-flowered. What are the genotypes of the
two white F2 plants?

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