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Aries Aries
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2 weeks ago
The order of genes on a plant chromosome is AB, and D, where A and B have a recombination frequency of 0.2, and B and D have a recombination frequency of 0.3. A pure-breeding plant that has the dominant A and D phenotypes with a recessive b phenotype is crossed to a pure-breeding plant that has the recessive a and d phenotypes with the dominant B phenotype. The resulting hybrid is crossed to a plant that has all three recessive phenotypes. Under the assumption that the value for interference in this region is zero, what percentage of each progeny type would result from a single crossover between B and D?

▸ 24% ABd/ abd; 24% abD/ abd

▸ 7% ABD/ abd; 7% abd/ abd

▸ 12% Abd/ abd; 12% aBD/ abd

50% AbD/ abd; 50% aBd/ abd

▸ 9% ABD/ abd; 9% abd/ abd
Textbook 

Genetic Analysis: An Integrated Approach


Edition: 3rd
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JoboJobo
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12% Abd/ abd; 12% aBD/ abd

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