Natural selection occurs when there is nonrandom elimination of genotypes from a population due to ________
A) decreased predation
B) similarities in viability or reproductive success
C) differences in reproductive isolation mechanisms
D) differences in viability or reproductive success
Answer: D
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The structure labeled "E" in this figure of a replication fork represents ____
a. single-stranded binding protein b. primase c. DNA ligase d. helicase e. DNA polymerase
Which of the following is not a somatic cell?
1.liver 2.skin 3.bone 4.blood 5.sperm
Dissolved phosphorus in aquatic ecosystems may return to the land via:a
erosion. b. phosphate mining. c. birds eating fish and mollusks. d. zooplankton. e. decomposition
One of the goals of synthetic biology is to:
A) all of these B) "custom build" a particular species of an existing organism C) develop novel life forms D) create a living cell int he laboratory