8. In gerbils, the gene that specifies coat color is sex-linked and has multiple alleles, as follows: B-black, br - brown, by - yellow, and b - albino. The allele br is incompletely dominant over by, the combination br by giving tan color; otherwise, dominance is in the order given -- B, br, by, b. (For your information, gerbils are mammals.) www A black gerbil mated with a yellow gerbil gave one brown male and one black female offspring. a. What is the sex of the black parent? b. What is the genotype of the brown offspring? c. If the two offspring were to mate with each other, what is the probability that they will have a yellow offspring? d. If the two offspring were to mate with each other, what is the probability that the first three female offspring will be black? e. If the brown offspring were to mate with his mother, what is the probability that the first two offspring will be brown males?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Subpart d and e only please
8. In gerbils, the gene that specifies coat color is sex-linked and has multiple
alleles, as follows: B-black, br - brown, by - yellow, and b - albino. The allele br
is incompletely dominant over by, the combination br by giving tan color;
otherwise, dominance is in the order given -- B, br, by, b. (For your information,
gerbils are mammals.)
A black gerbil mated with a yellow gerbil gave one brown male and one black
female offspring.
a. What is the sex of the black parent?
b. What is the genotype of the brown offspring?
c. If the two offspring were to mate with each other, what is the probability
that they will have a yellow offspring?
d. If the two offspring were to mate with each other, what is the probability
that the first three female offspring will be black?
e. If the brown offspring were to mate with his mother, what is the
probability that the first two offspring will be brown males?
Transcribed Image Text:8. In gerbils, the gene that specifies coat color is sex-linked and has multiple alleles, as follows: B-black, br - brown, by - yellow, and b - albino. The allele br is incompletely dominant over by, the combination br by giving tan color; otherwise, dominance is in the order given -- B, br, by, b. (For your information, gerbils are mammals.) A black gerbil mated with a yellow gerbil gave one brown male and one black female offspring. a. What is the sex of the black parent? b. What is the genotype of the brown offspring? c. If the two offspring were to mate with each other, what is the probability that they will have a yellow offspring? d. If the two offspring were to mate with each other, what is the probability that the first three female offspring will be black? e. If the brown offspring were to mate with his mother, what is the probability that the first two offspring will be brown males?
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