Which of the following are the areas where chromatids intertwine during meiosis?
A) nondisjunction
B) synapsis
C) chiasma
D) tetrad
E) bivalent
Answer: C
Biology & Microbiology
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The activation of B cells involves
A. activation of B helper cells. B. activation of complement. C. secretion of interferon. D. secretion of IL-2. E. binding of helper T cells to class I MHC proteins.
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The nucleotides called pyrimidines include
A. uracil and cytosine. B. uracil and thymine. C. thymine and cytosine. D. thymine and adenine. E. cytosine and guanine.
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Dizygotic twins are also called fraternal twins. Indicate whether the statement is true or false
Biology & Microbiology
Hyperplasia is the increase in fiber number sometimes seen in weight training.
a. true b. false
Biology & Microbiology