Problem

Solutions For An Introduction to Genetic Analysis Chapter 3 Problem 7P

Step-by-Step Solution

Solution 1

The genotype is R1/r1 R2/R2 r3/r3 which indicates that there are 3 contributing polygenes or 3 contributing doses of redness. Only 3 alleles contribute to redness while the others are recessive. The histogram of polygenes is drawn from the results of the selfing of a trihybrid organism.

When we check out the number of 3 contributing polygenic alleles, it corresponds to the middle and longest bar in the histogram. This bar corresponds to the value of 20 in the histogram.

Hence the middle bar corresponds to the given genotype.

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