What are the branched extensions of a neuron that receive signals called?
A. axons
B. cell bodies
C. dendrites
D. oligodendrocytes
E. synapses
C. dendrites
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When electrons are equally shared between two atoms, a(n) ________ bond is formed
a. hydrogen b. polar covalent c. ionic d. nonpolar covalent
During an asthma attack, allergens trigger the release of histamine, which causes severe constriction of the __________________.
A. pleural cavities B. trachea C. rib cage D. bronchi E. larynx
Blood leaves each glomerulus in which of the following?
Why are observations of meiotic drive and driver alleles relatively rare?
a. The selective advantage of drivers in heterozygotes is balanced by fitness loss in homozygotes. b. Most driver alleles become rapidly fixed in populations. c. Fitness advantages of driver alleles are too small to lead to an increase of the alleles in the population. d. Most driver alleles arise in small populations and are rapidly lost by genetic drift.