An XXX female would most likely result from nondisjunction in
A) the mother during egg formation.
B) the father during sperm formation.
C) in both the mother and father during gamete formation.
D) the fertilized egg.
E) neither the mother nor the father.
Ans: A) the mother during egg formation.
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CVS cannot detect inborn errors of metabolism because
A) it does not sample amniotic fluid. B) it is done too early in the pregnancy. C) it is done too late in the pregnancy. D) such errors are not detectable until after birth.
Which of the following would be an example of an endemic species?
a. zebra mussels b. Batrachochytrium dendrobatidis c. Pongo pygmaeus d. Rana catesbeiana
Plant surfaces are covered and protected by
a. ground tissue. b. protoderm. c. vascular tissue. d. meristem. e. dermal tissue.
Which of the following statements about the protein calmodulin is TRUE?
It interacts directly with the ligand receptor. It interacts directly with the G protein. It binds to Ca 2+ ions to mediate a cellular response. It binds to the Ca 2+ ion channel causing it to close. It induces ATP hydrolysis.