Book cover for Genetics: A Conceptual Approach

Genetics: A Conceptual Approach

Benjamin Pierce

ISBN #9781464109461

5th Edition

1,059 Questions

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28,583 Students Helped

Homework Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

None

Learning Objectives

Key Concepts

CONCEPT

DEFINITION

Autosomal Recessive Disorder

A type of genetic disorder in which two copies of a mutant allele (one from each parent) are required for the trait to be expressed. In the book, albinism is used as a classic example of this disorder.

Example Problems

Example 1

How does supercoiling arise? What is the difference between positive and negative supercoiling?

Example 2

What functions does supercoiling serve for the cell?

Example 3

Describe the composition and structure of the nucleosome

Example 4

Describe in steps how the double helix of DNA, which is $2 \mathrm{nm}$ in width, gives rise to a chromosome that is 700 nm in width.

Example 5

What are polytene chromosomes and chromosomal puffs?

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Step-by-Step Explanations

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Common Mistakes