Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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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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Transcribed Image Text: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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