In dogs, Gene B specifies a protein required for eumelanin (dark pigment) deposition. Protein B (specified by the B allele) deposits eumelanin densely so that the dog’s hair is black. Protein b (specified by the b allele) deposits eumelanin less densely, producing brown hair (chocolate). Allele B is dominant to allele b. Gene D specifies another protein that is also required for pigment deposition. The recessive allele d1specifies a protein that functions less efficiently than that specified by the dominant allele D. Less pigment is deposited in d1d1homozygous dogs than in dogs with a D allele, and so the color dictated by gene B is lighter. 1. Which of the following genotypes would a light-chocolate dog have? A) Bb d1d1 B) BB d1d1 C) bb d1d1 D) bb Dd1

In dogs, Gene B specifies a protein required for eumelanin (dark pigment) deposition. Protein B (specified by the B allele) deposits eumelanin densely so that the dog’s hair is black. Protein b (specified by the b allele) deposits eumelanin less densely, producing brown hair (chocolate). Allele B is dominant to allele b. Gene D specifies another protein that is also required for pigment deposition. The recessive allele d1specifies a protein that functions less efficiently than that specified by the dominant allele D. Less pigment is deposited in d1d1homozygous dogs than in dogs with a D allele, and so the color dictated by gene B is lighter. 1. Which of the following genotypes would a light-chocolate dog have? A) Bb d1d1 B) BB d1d1 C) bb d1d1 D) bb Dd1

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Description: In dogs, Gene B specifies a protein required for eumelanin (dark pigment) deposition. Protein B (specified by the B allele) deposits eumelanin densely so that the dog’s hair is black. Protein b (specified by the b allele) deposits eumelanin less dens

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 4CT: The young woman shown at right has albinismvery pale skin, white hair, and pale blue eyes. This...

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Concept explainers

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.

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Question

In dogs, Gene B specifies a protein required for eumelanin (dark pigment) deposition. Protein B (specified by the B allele) deposits eumelanin densely so that the dog’s hair is black. Protein b (specified by the b allele) deposits eumelanin less densely, producing brown hair (chocolate). Allele B is dominant to allele b. Gene D specifies another protein that is also required for pigment deposition. The recessive allele d1specifies a protein that functions less efficiently than that specified by the dominant allele D. Less pigment is deposited in d1d1homozygous dogs than in dogs with a D allele, and so the color dictated by gene B is lighter.

1. Which of the following genotypes would a light-chocolate dog have?

A) Bb d1d1

B) BB d1d1

C) bb d1d1

D) bb Dd1

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