Answered: 5.19 The accompanying diagram shows…

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter4: Pedigree Analysis In Human Genetics

Section: Chapter Questions

Problem 8QP: Analysis of Autosomal Recessive and Dominant Traits In the following pedigree, assume that the...

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Question: This is a normal 3 point test cross, except that instead of regular phenotypes, you are looking at DNA markers on a gel. One parent, according to the gel, is heterozygous at each marker. The other parent is homozygous for each marker. (Again, this means it is a test cross: AaEeHh x AAEEHH --but don't be confused by that, because these are not "dominant" and "recessive" per se; the phenotype is just a band on a gel). For each offspring, figure out its genotype (homozygous or heterozygous for each gene. Then, figure that one parent made only AEH gametes, so you can cross that out if it helps.) Then treat it pretty much the same as a 3 point test cross.

5.19 The accompanying diagram shows bands corre-
alleles denoted (A, a), (E, e), and (H, h) for the three
sible type of banding pattern observed among 1000
are shown on the left, and the number of each pos-
loci. The banding patterns of the parents P and P
each of three linked autosomal genes, with the
sponding to codominant molecular markers in
offspring is shown at the right.
Offspring
Parents
59 25
422
401 32 2
58
Pi P21
A
e
a

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