
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Transcribed Image Text:The pedigree below shows the phenotypes for hair color of individuals in a family over four generations. In this
pedigree, light hair color is a recessive allele, and dark hair color is a dominant allele.
FAMILY PEDIGREE
Y
Key
or
Dark hair color
Male
Light hair color O Female
or
What is the probability that offspring W will have the dark hair phenotype?
A
25%
50%
75%
100%

Transcribed Image Text:Mitchell is interested in the snapdragons that reproduce sexually. He knows that purple (P) is dominant to
white (w). Mitchell crosses a homozygous purple plant with a homozygous white plant. If he breeds two of the
first generation offspring together, what percentage of the second generation offspring can Mitchell predict
will most likely be white?
A
25%
B
50%
75%
100%
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