A cell that is not actively dividing is in what phase of the cell cycle?
A. G1
B. G0
C. G1'
D. Gnull
B
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Non-coding DNA regions within a gene are referred to as
A. introns. B. exons. C. templates. D. transposons. E. pseudogenes.
Which organisms would MOST likely be isolated from aerobic growth conditions with acetate and a soil sample heated to 80 °C for 10 min?
A) aerobic or facultative anaerobic acetogens B) endospore-forming bacteria C) hyperthermophilic heterotrophic bacteria D) mycoplasmas
Mantled howler monkeys have been found to obtain most of their food from relatively rare trees, even though finding these trees takes much longer than finding common trees. Nutritional analyses of both rare and common trees found that the rare trees tended to be higher in protein and water, while the common trees tended to be higher in crude fiber and plant secondary compounds. What process would maintain this behavior in mantled howler monkey populations?
A. habituation B. natural selection C. imprinting D. visual communication E. sexual selection
All of the alleles of all of the genes in a certain population is the ___________ of that population.
A. Gene pool B. Genotype C. Gene flow D. Mutation