In order for natural selection to occur within a population, certain conditions must be met. One such condition is
A. phenotypic variations that are genetic.
B. low rates of immigration.
C. heterozygosity must be very low.
D. phenotypic differences resulting from environmental conditions.
E. frequent mutations that are inherited.
Answer: A
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Energy is required in order to add a nucleotide to the growing strand of DNA during replication. From where does that energy come?
A. DNA polymerase B. DNA ligase C. helicase D. primase E. the incoming nucleotide
When the predator population is above the prey isocline, the prey population is
a. increasing b. decreasing c. neither increasing nor decreasing
Four of the five answers listed below are somatic senses. Select the exception
a. light b. pressure c. touch d. temperature e. pain
If water vapor content in the atmosphere is below the saturation point (= water vapor potential), the most likely result is:
What will be an ideal response?