What kingdoms composed the three kingdom classification system used by scientists in the late 1800s?
a. animals, plants, fungi
b. animals, plants, bacteria
c. animals, fungi, protists
d. animals, plants, protists
Ans: d. animals, plants, protists
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In the Hardy-Weinberg equation, 2pq refers to
A) the proportion of heterozygotes in a population. B) the number of homozygous dominant individuals in a population. C) the most common phenotype in a population. D) individuals who are homozygous recessive.
Phytoplankton patchiness in the epipelagic can occur when:
a. water clarity declines. b. there is an influx of nutrients. c. surface waters plunge to depths. d. fish aggregate. e. hydrothermal vents erupt.
Each of the following provides evidence in support of the primary role of RNA in the evolution of life EXCEPT ________.
A. RNA is less chemically stable than DNA B. RNA catalyzes peptide bond formation during protein synthesis C. ATP (energy currency of the cell) is a ribonucleotide D. some RNA molecules are catalytic E. RNA can regulate gene expression