Which of the following groups would be most likely to exhibit uniform dispersion?
A) red squirrels, who actively defend territories
B) cattails, which grow primarily at edges of lakes and streams
C) dwarf mistletoes, which parasitize particular species of forest tree
D) moths, in a city at night
E) lake trout, which seek out cold, deep water high in dissolved oxygen
Answer: A
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A researcher has mapped the entire genome of an insect. When scanning the sequences she notices highly repetitive sequences, which contain tandem arrays of short sequences. She is most likely looking at which region of the chromosome?
A. centromere B. telomere C. chromatid D. spindle fiber E. centriole
The rapid change in G6PD allele frequency and the correlation of this allele with areas of high rates of malaria
suggests that ____ explains this change in G6PD allele frequency. a. genetic drift b. artificial selection c. X-linked inheritance d. the founder effect e. natural selection
Unattached earlobes are a dominant trait. Finn and Maggie both have unattached earlobes but their daughter, Celia, does not. If Finn and Maggie have a second child, what is the probability that this child will have attached earlobes?
A: 1 B: 1/8 C: 1/2 D: 3/4 E: 1/4
Inhalation in humans is achieved by
A) contraction of back muscles. B) relaxation of back muscles. C) relaxation of the diaphragm and muscles between the ribs. D) contraction of the diaphragm and muscles between the ribs.