问题13Achondroplasia (dwarfism) is an example of a dominantly inherited disease. Individuals who have thedominant gene (A) have the dwarfism phenotype, while normal height is recessive (a). What is theprobability of having children with achondroplasia between a normal height female and aheterozygote achondroplasia male?100%75%25%50%

Answered: Achondroplasia (dwarfism) is an example…

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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问题13
Achondroplasia (dwarfism) is an example of a dominantly inherited disease. Individuals who have the
dominant gene (A) have the dwarfism phenotype, while normal height is recessive (a). What is the
probability of having children with achondroplasia between a normal height female and a
heterozygote achondroplasia male?
100%
75%
25%
50%

Expert Solution

Step 1: Achnodroplasia

Achondroplasia or dwarfism is a genetic bone disorder affecting one in $20, 000$ babies. It is the most prevalent kind of dwarfism. The head is generally large, but the trunk is average in size. The child's arms and legs are short in comparison to the body length. Adult girls with achondroplasia have an average height of $49$ inches (or $4$ feet $1$ inch) and adult males with achondroplasia have an average height of $52$ inches (or $4$ feet $4$ inches).

The most common symptoms of achondroplasia are normal intelligence, curved lower spine, small vertebral canal, misaligned teeth, poor muscle tone, loose joints, flat feet, etc.