One of the characteristics of life is
A. the ability to diffuse materials.
B. being able to adapt to new environmental conditions.
C. being made up of inorganic material.
D. All of these statements are true.
B. being able to adapt to new environmental conditions.
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In ________ speciation, there is gene flow between populations that are in the process of diverging into two or more species. In ________ speciation, there is no gene flow between populations that are in the process of diverging into two or more species
A. allopatric; sympatric B. sympatric; allopatric C. Both allopatric and sympatric are applicable to either description. D. Neither allopatric nor sympatric is applicable to either description.
During a La Niña event, less rain than normal falls in the American West and Southwest. What type of conditions were in effect in the fall of 2007 when California suffered severe wildfires?
1.La Niña
2.Neutral
3.El Niño
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).
How many genes does a human X chromosome carry?
a. 100 b. 1,400 c. 2,800 d. 14,000 e. 28,000