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Campbell Biology | 10th Edition | ISBN: 9780321775658 | Authors: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
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Two genes of a flower, one controlling blue (B) versus white(b) petals and the other

Chapter 15, Problem 8

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QUESTION:

Two genes of a flower, one controlling blue (B) versus white(b) petals and the other controlling round (R) versus oval (r)stamens, are linked and are 10 map units apart. You cross ahomozygous blue-oval plant with a homozygous white-roundplant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1,000 F2 progeny are obtained. Howmany F2 plants of each of the four phenotypes do you expect?

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QUESTION:

Two genes of a flower, one controlling blue (B) versus white(b) petals and the other controlling round (R) versus oval (r)stamens, are linked and are 10 map units apart. You cross ahomozygous blue-oval plant with a homozygous white-roundplant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1,000 F2 progeny are obtained. Howmany F2 plants of each of the four phenotypes do you expect?

ANSWER:


Based on the given information, the genotypes and phenotypes of the parental plants are as follows:

Parental plants:
Homozygous blue-oval plant: BBRR
Homozygous white-round plant: bbrr

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