Male-limited precocious puberty results from a rare, sex-limited autosomal allele (P) that is dominant over the allele for normal puberty (p) and is expressed only in males. Bill underwent precocious puberty, but his brother Jack and his sister Beth underwent puberty at the usual time, between the ages of 10 and 14. Although Bill’s mother and father underwent normal puberty, two of his maternal uncles (his mother’s brothers) underwent precocious puberty. All of Bill’s grandparents underwent normal puberty. Give the most likely genotypes for all the relatives mentioned in this family.

Male-limited precocious puberty results from a rare, sex-limited autosomal allele (P) that is dominant over the allele for normal puberty (p) and is expressed only in males. Bill underwent precocious puberty, but his brother Jack and his sister Beth underwent puberty at the usual time, between the ages of 10 and 14. Although Bill’s mother and father underwent normal puberty, two of his maternal uncles (his mother’s brothers) underwent precocious puberty. All of Bill’s grandparents underwent normal puberty. Give the most likely genotypes for all the relatives mentioned in this family.

Name: Male-limited precocious puberty results from a rare, sex-limited autos
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Description: Male-limited precocious puberty results from a rare, sex-limited autosomal allele (P) that is dominant over the allele for normal puberty (p) and is expressed only in males. Bill underwent precocious puberty, but his brother Jack and his sister Beth

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 5QP: As it turned out, one of the tallest Potsdam Guards had an unquenchable attraction to short women....

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Male limited precocious puberty results from a rare, sex-limited autosomal allele (P) that is dominant over the allele for normal puberty (p) and is expressed only in males. Jack undergoes precocious puberty but his sister Janice undergoes puberty at the normal time. Jack's mother Joanna has one brother John who underwent precocious puberty. Jack's father underwent normal puberty. In this scenario, Jack's sister can be Pp or pp. True False
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