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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?

Human Anatomy & Physiology (11th Edition)
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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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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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