The term “2n” means
(a) the diploid chromosome number is present.
(b) the haploid chromosome number is present.
(c) chromosomes within a single nucleus exist in homologous pairs.
(d) both a and c.
(d) both a and c.
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Which of the following diseases is NOT caused by endospore-forming bacteria?
A. Strep throat B. botulism C. anthrax D. tetanus E. lockjaw
Fertilization of human eggs usually takes place in the
A. ovary. B. oviduct. C. uterus. D. vagina. E. None of the choices are correct.
Who played the most influential role in discovering protists?
a. Rudolf Virchow b. Anton van Leeuwenhoek c. Theodor Schwann d. Matthias Schleiden
Which of the following best describes the mechanism behind the change in beak size in the finch population?
a. The formation of two new finch species from a single parent species b. A change in gene frequencies in the finch population due to the selective pressure from environmental change c. A new allele appearing in the finch population as a result of a mutation d. The achievement of dynamic equilibrium in the finch population as a result of homeostasis