When you mate two curly-haired cats, who are both heterozygous for both genes described above, which phenotype will be present at the lowest frequency among the offspring? straight-haired cats curly-haired cats hairless cats straight-haired and hairless cats are the lowest frequency (equal) all phenotypes are equally frequent O 00 0 O

Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter19: Introduction To Genetics
Section: Chapter Questions
Problem 9CT
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Cats are hairless when homozygous recessive (hh) for the Hairless gene. Cats have straight hair when recessive for the curly gene (cc). The H gene determines whether hair
can be produced, and the C gene determines whether the hair is curly. These genes work in an epistatic pathway, with H/h first, then C/c. You cross a straight-haired cat to a
hairless cat with genotype CChh, and find that all of the F1 kittens have curly hair.
Transcribed Image Text:Cats are hairless when homozygous recessive (hh) for the Hairless gene. Cats have straight hair when recessive for the curly gene (cc). The H gene determines whether hair can be produced, and the C gene determines whether the hair is curly. These genes work in an epistatic pathway, with H/h first, then C/c. You cross a straight-haired cat to a hairless cat with genotype CChh, and find that all of the F1 kittens have curly hair.
When you mate two curly-haired cats, who are both heterozygous for both genes described above, which phenotype will be present at the lowest frequency among the
offspring?
straight-haired cats
curly-haired cats
hairless cats
straight-haired and hairless cats are the lowest frequency (equal)
all phenotypes are equally frequent
Transcribed Image Text:When you mate two curly-haired cats, who are both heterozygous for both genes described above, which phenotype will be present at the lowest frequency among the offspring? straight-haired cats curly-haired cats hairless cats straight-haired and hairless cats are the lowest frequency (equal) all phenotypes are equally frequent
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