Chapter 7, Problem 13TQ

a.

Summary Introduction

To define:

At the hair length and furnishings genes, what is the correct genotype of the long-haired dog without furnishings?

Concept introduction:

Genes influence the physical, behavioral, and biochemical traits of all organisms. Genes transfer genetic information from one generation to another. Alleles are different versions of a gene. If the genotype contains two different alleles of a gene, it is known as heterozygous for that particular gene. If the genotype contains two copies of the same allele (two similar alleles of a gene), it is known as homozygous for that particular gene.

b.

Summary Introduction

To define:

At the hair length and furnishings genes, what are all the possible genotypes of the short-haired dog with furnishings?

Concept introduction:

Genes influence the physical, behavioral, and biochemical traits of all organisms. Genes transfer genetic information from one generation to another. Alleles are different versions of a gene. If the genotype contains two different alleles of a gene, it is known as heterozygous for that particular gene. If the genotype contains two copies of the same allele (two similar alleles of a gene), it is known as homozygous for that particular gene.

c.

Summary Introduction

To define:

Create the Punnett square of two dogs having heterozygous genotype for hair length and furnishings. What is the phenotype ratio of the offspring for those two traits?

Concept introduction:

Genes influence the physical, behavioral, and biochemical traits of all organisms. Genes transfer genetic information from one generation to another. Alleles are different versions of a gene. If the genotype contains two different alleles of a gene, it is known as heterozygous for that particular gene. If the genotype contains two copies of the same allele (two similar alleles of a gene), it is known as homozygous for that particular gene.