3. A woman has a rare abnormality of the eyelids called ptosis, which makes it impossible for her to open her eyes completely. The condition has been found to depend on a single dominant gene (P). The woman's father had ptosis, but her mother had normal eyelids. Her father's mother had normal eyelids. a. What are the probable genotypes of the woman, her father, and her mother? b. What percentage of her children will be expected to have ptosis if she marries a man with normal eyelids?

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
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3. A woman has a rare abnormality of the eyelids called ptosis, which makes it
impossible for her to open her eyes completely. The condition has been found to
depend on a single dominant gene (P). The woman's father had ptosis, but her
mother had normal eyelids. Her father's mother had normal eyelids.
a. What are the probable genotypes of the woman, her father, and her
mother?
b. What percentage of her children will be expected to have ptosis if she marries
a man with normal eyelids?
Transcribed Image Text:3. A woman has a rare abnormality of the eyelids called ptosis, which makes it impossible for her to open her eyes completely. The condition has been found to depend on a single dominant gene (P). The woman's father had ptosis, but her mother had normal eyelids. Her father's mother had normal eyelids. a. What are the probable genotypes of the woman, her father, and her mother? b. What percentage of her children will be expected to have ptosis if she marries a man with normal eyelids?
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