Hox genes have been identified in:
a. bilaterally symmetric animals only.
b. radially symmetric animals only.
c. asymmetric animals only.
d. both asymmetic and radially symmetric animals only.
e. both bilaterally symmetric and radially symmetric animals only.
E
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The Arctic tern makes an annual migration of up to ____
a. 700,000 km b. 70,000 km c. 7,000 km d. 700 km e. 70 km
Symptoms of heat exhaustion include all of the following except ________
a. impaired judgment b. sweating c. release of toxins into the blood d. dizziness
This graph shows both human birth weight and
newborn infant mortality. The most common birth weight is between seven and eight pounds. Human birth weight seems to be an example of a. directional selection. b. stabilizing selection. c. sexual selection. d. disruptive selection. e. artificial selection
The ______________ antibody class is referred to as the maternal antibody
A. IgM B. IgE C. IgG D. IgA E. IgD