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1. In dogs, brown or black coat color is determined by a single autosomal gene with brown (b) being recessive to black (B). A separate gene called extension with alleles e and E also influences color. ee is epistatic black and brown. Dogs that are homozygous for the extension (e) allele have yellow coat color regardless of other genes. The presence of a single E allele allows black or brown to be expressed. Trixie, dog with yellow coat color, is mated to Mansfield, a dog with black coat color, and the puppies are produced in the following ratios: ½ yellow 14 black 1/4 brown What were the genotypes of Trixie and Mansfeild?

1. In dogs, brown or black coat color is determined by a single autosomal gene with brown (b) being recessive to black (B). A separate gene called extension with alleles e and E also influences color. ee is epistatic black and brown. Dogs that are homozygous for the extension (e) allele have yellow coat color regardless of other genes. The presence of a single E allele allows black or brown to be expressed. Trixie, dog with yellow coat color, is mated to Mansfield, a dog with black coat color, and the puppies are produced in the following ratios: ½ yellow 14 black 1/4 brown What were the genotypes of Trixie and Mansfeild?

Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter10: Control Of Gene Expression
Section: Chapter Questions
Problem 3CT: Almost all calico cats (one is pictured in FIGURE 10.7B) are female. Why? B When this calico cat was...
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1. In dogs, brown or black coat color is determined by a single autosomal gene with brown (b) being recessive to black (B). A separate gene called extension with alleles e and E also influences color. ee is epistatic black and brown. Dogs that are homozygous for the extension (e) allele have yellow coat color regardless of other genes. The presence of a single E allele allows black or brown to be expressed. Trixie, dog with yellow coat color, is mated to Mansfield, a dog with black coat color, and the puppies are produced in the following ratios: ½ yellow 14 black 1/4 brown What were the genotypes of Trixie and Mansfeild?
Transcribed Image Text:1. In dogs, brown or black coat color is determined by a single autosomal gene with brown (b) being recessive to black (B). A separate gene called extension with alleles e and E also influences color. ee is epistatic black and brown. Dogs that are homozygous for the extension (e) allele have yellow coat color regardless of other genes. The presence of a single E allele allows black or brown to be expressed. Trixie, dog with yellow coat color, is mated to Mansfield, a dog with black coat color, and the puppies are produced in the following ratios: ½ yellow 14 black 1/4 brown What were the genotypes of Trixie and Mansfeild?
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