Answered: Black, sepia, cream, and albino are…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 32CTQ: In Section 12.3, ''Laws of Inheritance," an example of epistasis was given for the summer squash....

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Black, sepia, cream, and albino are coat colors of guinea
pigs. Individual animals (not necessarily from pure
lines) showing these colors were intercrossed; the results are tabulated as follows, where the abbreviations A
(albino), B (black), C (cream), and S (sepia) represent
the phenotypes:a. Deduce the inheritance of these coat colors, and use
gene symbols of your own choosing. Show all parent and
progeny genotypes.
b. If the black animals in crosses 7 and 8 are crossed,
what progeny proportions can you predict by using your
model?

the phenotypes:
Phenotypes of progeny
Parental
Cross
phenotypes
B
A
Bx B
Bx A
C x C
Sx C
1
22
7
2
10
34
11
4
24
11
12
ВхА
13
12
Bx C
Bx S
Bx S
S x S
C x A
19
20
18
20
8
14
8
6.
26
9.
10
15
17

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