Mutations in the TYR gene may render its enzyme product—tyrosinase—nonfunctional. Individuals homozygous for such mutations cannot make the pigment melanin. Albinism, the absence of melanin, results. Humans and many other organisms can have this phenotype (right). Mutated tyrosinase alleles are recessive when paired with the normal allele in heterozygous individuals. In the following situations, what are the probable genotypes of the father, the mother, and their children? a. Both parents have normal phenotypes; some of their children have the albino phenotype and others are unaffected. b. Both parents and children have the albino phenotype. c. The mother and three children are unaffected; the father and one child have the albino phenotype.

BuyFind

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
BuyFind

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

Solutions

Chapter 13, Problem 7GP
Textbook Problem

Mutations in the TYR gene may render its enzyme product—tyrosinase—nonfunctional. Individuals homozygous for such mutations cannot make the pigment melanin. Albinism, the absence of melanin, results. Humans and many other organisms can have this phenotype (right). Mutated tyrosinase alleles are recessive when paired with the normal allele in heterozygous individuals. In the following situations, what are the probable genotypes of the father, the mother, and their children?

  1. a. Both parents have normal phenotypes; some of their children have the albino phenotype and others are unaffected.
  2. b. Both parents and children have the albino phenotype.
  3. c. The mother and three children are unaffected; the father and one child have the albino phenotype.

Chapter 13, Problem 7GP, Mutations in the TYR gene may render its enzyme producttyrosinasenonfunctional. Individuals

Expert Solution

Want to see the full answer?

Check out a sample textbook solution.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.

Chapter 13 Solutions

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

Additional Science Textbook Solutions

Find more solutions based on key concepts
People who take lip physical activity for weight loss can increase weight loss by using sports drinks do not ne...

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

Where in a prokaryotic cell is DNA found? How is that DNA organized?

Biology: The Dynamic Science (MindTap Course List)

On what does the range of a projectile depend?

An Introduction to Physical Science

A pulse traveling along a string of linear mass density is described by the wave function y=[A0ekx]sin(kxt) wh...

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

What kinds of plate boundaries exist?

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