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Ch. 5 - Chromosome Mapping in Eukaryotes
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All textbooksKlug 12th EditionCh. 5 - Chromosome Mapping in EukaryotesProblem 26

Chapter 5, Problem 26

In a certain plant, fruit is either red or yellow, and fruit shape is either oval or long. Red and oval are the dominant traits. Two plants, both heterozygous for these traits, were testcrossed, with the following results. Determine the location of the genes relative to one another and the genotypes of the two parental plants.

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Hello everyone here We have a question that says the genetic distances between the three genes genes A B C. D and E. F. Were identified using two point mapping cross. Given the following distances. What is the sequence of the three genes in the chromosome? So we want to look for the two genes that are farthest apart and those will be our outermost genes. In this case it is a BEF at 39. So we know that a B is on one side and E F. Is on the other so that only leaves C. D. So C. D. Must be in the middle. So our answer here is C A b c D E F. Thank you for watching. Bye.
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