Chapter 10, Problem 3IA

a.

Summary Introduction

To explain: Whether woolly hair is a sex-linked or autosomal.

Introduction: Woolly-haired is a rare congenital disease that is indicated by extreme kinkiness of the hair. The fragile hair may be present at birth or appear in the first month. It may be due to homozygous or heterozygous mutations in the gene lipase H and lysophosphatidic acid receptor 6. These two genes work together for hair growth and texture. It may be autosomal dominant hereditary woolly hair or autosomal recessive familial woolly hair.

b.

Summary Introduction

To determine: Whether the woolly-hair trait is dominant or recessive.

c.

Summary Introduction

To determine: Whether the woolly-hair trait given is determined by a single gene or multiple genes.