Sexual reproduction involves ____
a. one diploid cell fertilizing a haploid cell
b. the union of two somatic cells
c. the union of male and female gametes
d. a single mitotic division of the parent cell to produce a daughter cell
e. the union of two gametes to produce a haploid zygote
ANSWER: c
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Superantigens exert their damaging effects by
A. killing large numbers of phagocytic cells. B. causing the massive and non-specific release of cytokines by T cells. C. forming harmful antibody aggregates. D. All of the choices are correct.
How many unique STR regions does the FBI use in forensic analysis?
A) 1 B) 5 C) 13 D) 50 E) 100+
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