A typical soil is composed mostly of humus
____________________ Indicate whether the statement is true or false.
F, inorganic minerals
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A reciprocal translocation between two chromosomes can result in the formation of a(n) ____________________ gene
Fill in the blank(s) with correct word
A solution having a pH of 6 would:a
have equal concentrations of hydrogen ions and hydroxide ions. b. have a higher concentrations of hydroxide ions than hydrogen ions. c. be slightly acidic. d. be slightly basic. e. be neutral.
If the concentration of solutes in a cell is less than the concentration of solutes in the surrounding fluid,
then the extracellular fluid is said to be: a. hypertonic. b. hypotonic. c. isotonic. d. stable. e. amphipathic
Most causes of speciation are relatively slow, in that the differences separating species take many generations to accrue and establish reproductive isolation. Which of the following is most likely to produce a species in just a few generations?
a. Genetic drift b. Behavioral isolation c. Reinforcement d. Founder effect e. Polyploidy