In __________ speciation, a geographic barrier interrupts gene flow between populations. Fill in the blank(s) with the appropriate word(s)
allopatric
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The term evolution is used to describe
A. heritable changes in characteristics of a population from one generation to the next. B. any change in an individual that can be observed. C. changes in the number of individuals in a population due to mating. D. the ability of an individual organism to pass on what it has learned, through experience, to the next generation. E. any change in an individual organism that occurs in somatic cells.
In _____ selection, individuals intermediate in a phenotypic distribution have greater reproductive success.
A. stabilizing B. directional C. disruptive D. balancing E. negative frequency-dependent
Which circumstance led to the collapse of the Khmer civilization?
a. road building b. salty soils from irrigation c. reforestation d. change in climate
Nicotine synthesis is an adaptation of plant chemical defense against insects
____________________ Indicate whether the statement is true or false.