C. Consider the following hypothetical scheme of inheritance of coat color in an extinct mammal. Gene A controls the conversion of white pigment P, to gray pigment P1. The dominant allele A produces an enzyme necessary for this conversion but the recessive allele a produces an enzyme with no activity. b. Gene B controls the conversion of the gray pigment P1 to black pigment P2. The dominant B produces the active enzyme that catalyzes the reaction, and the recessive allele b produces a defective enzyme with no activity. c. The dominant allele C of a third gene produces a product that completely inhibits the activity of the enzyme produced gene A. Allele c produces defective product that does not inhibit the reaction. а. d. Genes A, B, and C assort independently, and no other genes are involved. 1. Draw the pathway described above. 2. Using branching method, what is the expected genotypic and phenotypic ratio if you cross: AabbCc x AAbbCc

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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C. Consider the following hypothetical scheme of inheritance of coat color in an extinct mammal.
a. Gene A controls the conversion of white pigment P, to gray pigment P1. The dominant allele
A produces an enzyme necessary for this conversion but the recessive allele a produces an
enzyme with no activity.
b. Gene B controls the conversion of the gray pigment P, to black pigment P2. The dominant B
produces the active enzyme that catalyzes the reaction, and the recessive allele b produces a
defective enzyme with no activity.
c. The dominant allele C of a third gene produces a product that completely inhibits the activity
of the enzyme produced gene A. Allele c produces defective product that does not inhibit the
reaction.
d. Genes A, B, and C assort independently, and no other genes are involved.
1. Draw the pathway described above.
2. Using branching method, what is the expected genotypic and phenotypic ratio if you
cross:
AabbCc x
AAbbCc
Transcribed Image Text:C. Consider the following hypothetical scheme of inheritance of coat color in an extinct mammal. a. Gene A controls the conversion of white pigment P, to gray pigment P1. The dominant allele A produces an enzyme necessary for this conversion but the recessive allele a produces an enzyme with no activity. b. Gene B controls the conversion of the gray pigment P, to black pigment P2. The dominant B produces the active enzyme that catalyzes the reaction, and the recessive allele b produces a defective enzyme with no activity. c. The dominant allele C of a third gene produces a product that completely inhibits the activity of the enzyme produced gene A. Allele c produces defective product that does not inhibit the reaction. d. Genes A, B, and C assort independently, and no other genes are involved. 1. Draw the pathway described above. 2. Using branching method, what is the expected genotypic and phenotypic ratio if you cross: AabbCc x AAbbCc
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