Changes in chromosome number are usually the result of
a. genetic displacement.
b. trisomy.
c. crossing over.
d. nondisjunction.
e. disjunction.
ANSWER: d
You might also like to view...
Which sensory system is associated with the occipital lobe of the brain?
A. vision B. hearing C. touch D. taste
Imagine you are entering a darkened cavern. You are excited, but also a little nervous. Your heart rate quickens, your blood pressure rises slightly, and your digestive system activity decreases as blood is diverted to your muscles—all changes that prepare you should you need to move rapidly. This type of change is an example of
A. positive feedback control. B. negative feedback control. C. a failure of homeostasis. D. feedforward regulation. E. open loop feedback.
What type of bonding holds one strand of DNA to the complementary strand of DNA?
A. Covalent B. Hydrogen C. Disulfide D. Ionic
Which of the following must be true for a female to inherit hemophilia?
a. Her father has the disease. b. Her mother is homozygous normal. c. Her father and mother are heterozygous. d. Her mother has the disease. e. Her father is heterozygous