Hemophilia A is an X-linked recessive disorder. If a normal man marries a woman who is a carrier, what fraction of their daughters will have hemophilia?
A. 75%
B. 100%
C. 25%
D. 0%
E. 50%
D. 0%
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How many replication forks are there at a replication origin?
A. 1 B. 2 C. 3 D. 4 E. 5
The pituitary gland is controlled by the:
a. pineal gland b. pancreas c. medulla d. thalamus e. hypothalamus
Which of the following statements about blood
cells in solutions is CORRECT?
a. A blood cell placed in an isotonic solution will swell. b. A blood cell placed in a hypotonic solution will swell. c. A blood cell placed in a hypotonic solution will shrink. d. A blood cell placed in an isotonic solution will shrink. e. A cell placed in a hypotonic solution will remain the same size.
Which of the following structures allows a cell to survive adverse environmental conditions?
a) Capsule b) Carboxysome c) Endospore d) Gas vacuole