menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

Analysis of X-Linked Dominant and Recessive Traits Suppose a couple, both phenotypically normal, have two children: one unaffected daughter and one son affected with a genetic disorder. The phenotype ratio is 1:1, making it difficult to determine whether the trait is autosomal or X-linked. With your knowledge of genetics, what are the genotypes of the parents and children in the autosomal case? In the X-linked case?

BuyFindarrow_forward

Human Heredity: Principles and Iss...

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

Solutions

Chapter
Section
BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 4, Problem 19QP
Textbook Problem
3 views

Analysis of X-Linked Dominant and Recessive Traits

Suppose a couple, both phenotypically normal, have two children: one unaffected daughter and one son affected with a genetic disorder. The phenotype ratio is 1:1, making it difficult to determine whether the trait is autosomal or X-linked. With your knowledge of genetics, what are the genotypes of the parents and children in the autosomal case? In the X-linked case?

Summary Introduction

To explain: The genotypes of the parents and children if the pattern of inheritance is sex-linked.

Introduction: The parents are phenotypically normal in the given question. They have two children out of which the son is affected and the daughter is unaffected. This indicates that the phenotypic ratio of the second generation is 1:1.

Explanation of Solution

Parents are normal, but one of their children is affected by the disease. In the sex-linked inheritance, the mother always contributes one X-chromosome to the son. However, the mother is phenotypically unaffected; this means that the mother must be a carrier of the disease.

So, in the next generation, one affected X-chromosome is transmitted by mother to son...

Summary Introduction

To explain: The genotype of the parents and children if the pattern of inheritance is autosomal.

Introduction: The parents are phenotypically normal in the given question. They have two children out of which the son is affected and the daughter is unaffected. This indicates that the phenotypic ratio of the second generation is 1:1.

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

Chapter 4 Solutions

Human Heredity: Principles and Issues (MindTap Course List)
Show all chapter solutions
add

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
All of the following are potential benefits of regular physical activity except improved body composition. lowe...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is the difference between our Solar System, our galaxy, and the Universe?

Horizons: Exploring the Universe (MindTap Course List)

How does an ionic bond form?

Biology: The Dynamic Science (MindTap Course List)

What is the difference between a vitamin and a mineral?

Chemistry for Today: General, Organic, and Biochemistry

Find the equivalent capacitance of' the group of capacitors shown in Figure P26.54.

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

What is the shape of the heliopause? What determines that shape?

Foundations of Astronomy (MindTap Course List)

Plankton are said to be drifters, yet some of them can swim. Which is it?

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