The following chart shows the crossover frequencies for genes on an autosome. Construct a linkage map showing map units between the genes. Gene Recombinant Frequency P-Q 10% P-R 16% P-S 24% Q-R 26% Q-S 34%
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Construct a chromosome map from the following charts showing crossover frequencies for different gene combinations on autosomes: Gene Combinations Recombination Frequency 2.5 3.0 5.5 5.5 8.0 11.0 Gene Combinations Crossover Frequency 24.0 8.0 2.0 16.0 8.0 6.0 Note: Numbers represent map units between genes. Unusual map Gene Combinations Recombination Frequency 2.2 3.0 26.6 30.0 32.2 33.0 35.2 56.6
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In a linkage mapping experiment, the following cross is performed: Pq/pQ x pq/pq. From this cross, the following progeny are observed: 430 Pq/pq 420 pQ/pq 30 PQ/pq 20 pq/pq What is the map distance between genes P and Q in map units?
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