A researcher examines a microsatellite locus in a wild population of D. melanogaster. She finds that in a sample of 50 individuals, 35 different alleles are segregating. The best explanation for the presence of all of these alleles is:
a. balancing selection.
b. mutation.
c. the neutral theory.
d. overdominance.
e. the law of large numbers.
C
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Clues from geology and paleontology suggest that simple cells, or their precursors, arose about _____ years ago.
A. 6 million B. 4 billion C. 2 billion D. 1 million E. 3 million
After removal of the RNA primers and replacement with DNA nucleotides, the single-stranded nick adjacent to Okazaki fragments is filled in through a reaction that involves which enzyme?
A) DNA primase B) SSB protein C) RNA polymerase D) DNA ligase E) DNA helicase
Use the Hardy-Weinberg equations: p + q = 1 and p2 + 2pq + q2 = 1. If the dominant allele frequency is 0.8, then what percent of the population will be heterozyous?
A. 0.32 B. 0.16 C. 0.64 D. 0.04 E. 0.40
Homeostasis is the maintenance by organisms of a balanced state of internal conditions
Indicate whether the statement is true or false