Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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1. a. Assume that two transcription factors are required for expression of the blue pigmentation
genes in pansies. (Without the pigment, the
flowers are white.) What
would you expect from crossing strains heterozygous for wild-type and recessive amorphic
alleles for each of the genes encoding these
transcription factors?
b. Now assume that either transcription factor is
sufficient to get blue color. What phenotypic
ratios would you expect from crossing the same
two heterozygous strains?
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