Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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A condition known as icthyosis hystrix gravior appeared
in a boy in the early eighteenth century. His skin became
very thick and formed loose spines that were sloughed
off at intervals. When he grew up, this “porcupine man”
married and had six sons, all of whom had this condition,
and several daughters, all of whom were normal. For
four generations, this condition was passed from father
to son. From this evidence, what can you postulate about
the location of the gene?
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