# Analysis of Autosomal Recessive and Dominant Traits The father of 12 children begins to show symptoms of Huntington disease. a. What is the probability that Sam, the man’s second-oldest son (II-2), will suffer from the disease if he lives a normal life span? (Sam’s mother and her ancestors do not have the disease.) b. Can you infer anything about the presence of the disease in Sam’s paternal grandparents?

### Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

Chapter
Section

### Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 4, Problem 13QP
Textbook Problem
195 views

## Analysis of Autosomal Recessive and Dominant TraitsThe father of 12 children begins to show symptoms of Huntington disease. a. What is the probability that Sam, the man’s second-oldest son (II-2), will suffer from the disease if he lives a normal life span? (Sam’s mother and her ancestors do not have the disease.) b. Can you infer anything about the presence of the disease in Sam’s paternal grandparents?

a.

Summary Introduction

To explain: The probability that Sam is suffering from the Huntington disease.

Introduction: Huntington disease is an autosomal dominant disease. In autosomal dominant condition, only one allele of a gene is enough to transmit the characteristics of the disease. The genotype of an infected individual can be heterozygous (Hh) or homozygous dominant (HH).

### Explanation of Solution

An individual, who is the father of 12 children, begins to show the symptoms of Huntington's disease. Sam is his second-oldest son. Sam’s mother and his maternal ancestors had not suffered from Huntington's disease. Huntington disease is an autosomal dominant disease; thus, the genotype of Sam's father would be “HH” or “Hh.” Sam’s mother is normal; so, she must carry a recessive phenotype “hh...

b.

Summary Introduction

To explain: The presence of Huntington disease in Sam’s paternal grandparents.

Introduction: Huntington disease is an autosomal dominant disease. In autosomal dominant condition, only one allele of a gene is enough to transmit the characteristics of the disease. The genotype of an infected individual can be heterozygous (Hh) or homozygous dominant (HH).

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Find more solutions based on key concepts
What is an emulsifier?

Organic And Biological Chemistry

are removed from new mRNAs. a. Introns b. Exons c. Telomeres d. Amino adds

Biology: The Unity and Diversity of Life (MindTap Course List)

A 2 100-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 5.00 m before com...

Physics for Scientists and Engineers, Technology Update (No access codes included)

Has anybody drilled into Earths mantle or core to return samples of the densest interior layers?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin

What does pressure measure? What does temperature measure?

Introductory Chemistry: An Active Learning Approach