Maturation of B cells occurs in the
A. lymph nodes.
B. bone marrow.
C. Peyer's patches.
D. thymus.
E. spleen.
Answer: B
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Helicobacter pylori is a principal causative agent of
A. gastroenteritis. B. toxic shock syndrome. C. human ehrlichiosis. D. peptic ulcer disease.
The position of a cell within an embryo during embryonic development determines ________________.
A. which genes will be knocked out B. the gender of the embryo C. whether the cell will differentiate D. which master genes are turned on E. whether maternal mRNAs will be translated
Nonstriated muscle is also called _________ muscle.
A) autonomic B) smooth C) skeletal D) voluntary
If the heterozygous phenotype is intermediate between those of the two different homozygotes, it is called
A. independent assortment. B. incomplete dominance. C. polygenic. D. epistasis. E. codominance.