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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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Assume that genes A and B are on the same chromosome andare 50 map units apart. An

Chapter 15, Problem 7

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QUESTION:

Assume that genes A and B are on the same chromosome andare 50 map units apart. An animal heterozygous at both lociis crossed with one that is homozygous recessive at both loci.What percentage of the offspring will show recombinant phenotypesresulting from crossovers? Without knowing thesegenes are on the same chromosome, how would you interpretthe results of this cross?

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QUESTION:

Assume that genes A and B are on the same chromosome andare 50 map units apart. An animal heterozygous at both lociis crossed with one that is homozygous recessive at both loci.What percentage of the offspring will show recombinant phenotypesresulting from crossovers? Without knowing thesegenes are on the same chromosome, how would you interpretthe results of this cross?

ANSWER:


The percentage of the offspring showing recombinant phenotypes resulting from crossovers is 50%, which is the expected recombination fract

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