The antibodies that activate the complement system are
a. IgA and IgD.
b. IgG and IgM.
c. IgG and IgD.
d. IgE and IgM.
e. IgA and IgE.
B
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These joints are somewhat moveable, but they do not have a fluid-filled capsule surrounding them
They have fibrous connective tissue covering the ends of the bones involved.
a. synovial joints b. cartilaginous joints c. fibrous joints d. non-fibrous joints e. antagonistic joints
HIV can be transmitted by
a. unprotected sex. b. sharing needles. c. mother to infant during pregnancy. d. mother to infant during breast feeding. e. all of these
The species concept based on analysis of character states that indicate the smallest monophyletic group is ________
A) the morphospecies concept B) the phylogenetic species concept C) the biological species concept D) the ecological species concept
In a population with two alleles, B and b, the allele frequency of b is 0.4. What would be the frequency of heterozygotes if the population is in Hardy-Weinberg equilibrium?
a. 0.48 b. 0.16 c. 0.24 d. 0.60