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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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SCIENTIFIC INQUIRYDraw I T Assume you are mapping genes A, B, C, and D inDrosophila. You

Chapter 15, Problem 12

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QUESTION:

SCIENTIFIC INQUIRYDraw I T Assume you are mapping genes A, B, C, and D inDrosophila. You know that these genes are linked on the samechromosome, and you determine the recombination frequenciesbetween each pair of genes to be as follows: AB, 8%; AC,28%; AD, 25%; BC, 20%; BD, 33%.(a) Describe how you determined the recombination frequenciesfor each pair of genes.(b) Draw a chromosome map based on your data.

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QUESTION:

SCIENTIFIC INQUIRYDraw I T Assume you are mapping genes A, B, C, and D inDrosophila. You know that these genes are linked on the samechromosome, and you determine the recombination frequenciesbetween each pair of genes to be as follows: AB, 8%; AC,28%; AD, 25%; BC, 20%; BD, 33%.(a) Describe how you determined the recombination frequenciesfor each pair of genes.(b) Draw a chromosome map based on your data.

ANSWER:


(a) The recombination frequencies between each pair of genes were determined by crossing Drosophila that contain different versions of the genes in question and observing the

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