The expected proportions of phenotypes in children of BBMM × BbMm. Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

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Answer 1

Question

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

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Answer 2

Question

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

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Answer 3

Question

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

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Answer 4

Question

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Expert Solution & Answer

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Answer 5

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Answer 6

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

Answer 7

Chapter 11, Problem 5GP

a.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BBMM × BbMm.

Introduction: The hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B). The synthesis of melanin is coded by another gene having two alleles. The (M) allele allows the synthesis of melanin whereas the (m) allele prevents it. The genotypes (mm) are albino. The pigment melanin is present in both types of hair that is brown hair as well as blond hair; however it is present more in brown haired people. Blond hair (b) is recessive to brown hair (B).

Answer 8

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

Answer 9

b.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

Answer 10

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Answer 11

c.

Summary Introduction

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 11.1 - describe the relationships among chromosomes,...Ch. 11.1 - Prob. 2CYL Ch. 11.2 - distinguish between self-fertilization and...Ch. 11.2 - Prob. 2CYL Ch. 11.3 - Prob. 1TC Ch. 11.3 - Prob. 1CSC Ch. 11.3 - describe the pattern of inheritance of a trait...Ch. 11.3 - Prob. 2CYL Ch. 11.3 - Prob. 3CYL Ch. 11.4 - Can the genotype of a plant grown from a smooth,...

Solution Summary: The author explains that the hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair.

Concept explainers

Videos

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Want to see the full answer?

Chapter 11 Solutions

Solution Summary: The author explains that the hair color in humans is regulated by two interacting genes. The pigment melanin is present in both types of hair that is brown hair as well as blond hair.

Concept explainers

Videos

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm. Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

To determine: The expected proportions of phenotypes in children of BbMm and bbmm. Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.

Want to see the full answer?

Chapter 11 Solutions

To determine: The expected proportions of phenotypes in children of BbMm ×BbMm.

Introduction: The mating has taken place between two doubly heterozygous individuals. Both of them have a genotype of BbMm that is both will have brown hair gene as well as gene for melanin synthesis.

To determine: The expected proportions of phenotypes in children of BbMm and bbmm.

Introduction: One of the parents have a genotype of BbMm that is will have brown hair gene as well as gene for melanin synthesis and the other parent is albino.