A person is born with XY chromosomes but physically and mentally presents as female until puberty.  What biological factors play a role?   A person with XX chromosomes are born with ambiguous genitals that resemble a penis, but they have internal ovaries.  What biological factors could be involved?   A person with XX chromosomes has a functional SRY gene on one of their X chromosomes.  How would you expect them to develop?   What role does birth order play in fetal development?

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter20: The Reproductive System
Section: Chapter Questions
Problem 14RE
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Read through the section on sex determination to answer the following scenarios.

  1. A person is born with XY chromosomes but physically and mentally presents as female until puberty.  What biological factors play a role?
    1.  
  2. A person with XX chromosomes are born with ambiguous genitals that resemble a penis, but they have internal ovaries.  What biological factors could be involved?
    1.  
  3. A person with XX chromosomes has a functional SRY gene on one of their X chromosomes.  How would you expect them to develop?
    1.  
  4. What role does birth order play in fetal development?
    1.  
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