Neutral mutations tend to accumulate in DNA at a predictable rate; like the ticks of a(n) __________, they can help
researchers estimate how long ago two lineages diverged. Fill in the blank(s) with the appropriate word(s).
ANSWER: molecular clock
Biology & Microbiology
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Prokaryote means "before the nucleus", but what general feature could prokaryotes also be said to lack?
What will be an ideal response?
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Microfilaments function in
A) muscle contraction. B) cytoplasmic streaming. C) cell division. D) maintenance of animal cell shape. E) All of the above.
Biology & Microbiology
Historically, eukaryotic organisms that did NOT fit into other kingdoms were placed into which kingdom?
A. Protista B. Fungi C. Plantae D. Animalia
Biology & Microbiology
Which of the following are cytokines produced in response to invasion by viruses
A. RIG-1 B. Interferon C. Histamine D. Interleukin E. Colony-stimulating factor
Biology & Microbiology