In small isolated populations, gene frequencies can fluctuate considerably. The term that applies to this circumstance is ________
A) stabilizing selection
B) natural selection
C) allelic separation
D) genetic drift
E) genetic isolation
D
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Deeply weathered soils, with no distinct horizons characteristic of the tropical rain forest, are
A) mollisols. B) andosols. C) oxisols. D) alfisols.
The simplest multicellular animals that have only a few different cell types are
A) flatworms. B) sea squirts. C) jellyfish. D) anemones. E) sponges.
Select all of the following ways that the flu virus may impact body systems.A) The breakdown of muscle fibers and accumulation of fluid cause muscle and joint achiness.B) The restriction of blood vessels in the skin conserves heat and results in chills.C) The abundance of cytokines signals the hypothalamus to increase body temperature, resulting in a fever.D) Appetite centers in the brain show reduced action, resulting in a loss of appetite and nausea.E) Toxins produced by the virus break down muscles, resulting in muscle aches and pains.F) A rapid loss of epithelial cells within the respiratory system results in a shortness of breath and rapid heart rate.
What will be an ideal response?
Salt in mannitol salt agar inhibits the growth of Staphylococcus aureus
Indicate whether the statement is true or false.