If a test cross of a trihybrid produced the following outcome, how far apart are genes C and F? phenotype observed # CFB 125 cfb 121 CFb 120 cFb 119 Cfb 128 cfB 127 CfB 124 cFb 123 a) 123 cM! b) I don't know how to do these problems! c) It is impossible to tell since the genes are linked! d)It is impossible to tell since the genes are not linked!

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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If a test cross of a trihybrid produced the following outcome, how far apart are genes C and F?
                                phenotype              observed #
                                   CFB                             125
                                   cfb                              121
                                   CFb                            120
                                   cFb                             119
                                   Cfb                             128
                                   cfB                             127
                                  CfB                             124
                                   cFb                            123

a) 123 cM!

b) I don't know how to do these problems!

c) It is impossible to tell since the genes are linked!

d)It is impossible to tell since the genes are not linked!

Expert Solution

Step 1

Introduction :-

A trihybrid refers to an individual that is heterozygous for three different genes. This means that the individual has two different alleles for each of the three genes, resulting in a total of eight possible gamete combinations. Trihybrids can be used in genetic crosses to study inheritance patterns and the linkage of genes.

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