In epigenetic inheritance ________.
A. one allele of a homologous pair is expressed
B. both homologous chromosomes are inactivated
C. one set of the homologous chromosomes is silenced
D. None of the choices are correct.
Answer: A
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A. 4 B. 1 C. 8 D. 6 E. 2
Chemotaxins function in ___________.
A) digesting invading cells, attracting additional immune cells, and poisoning and killing invading cells. B) digesting invading cells and attracting additional immune cells. C) digesting invading cells. D) attracting additional immune cells. E) poisoning and killing invading cells.
Which bones develop from pharyngeal arches?
A. The sphenoid and ethmoid B. Bones of the base of the cranium C. Most of the bones of the calvarium D. The facial bones E. The temporal and occipital
Air capillaries are found in
a. mammals. b. reptiles. c. birds. d. fish. e. amphibians.