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.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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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. 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.
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