Mutation is the only evolutionary mechanism that _____
A) does little to change allele frequencies
B) is more important in eukaryotes than in prokaryotes
C) happens in all populations
D) has no effect on genetic variation
A
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What is the function of pain?
a. It causes an organism to move away from, or otherwise decrease exposure to, a damaging stimulus. b. It stimulates the brain to release endorphins to prevent an addiction. c. It protects an organism from encountering harmful conditions. d. It works faster than conscious thought. e. It causes an organsim’s heart rate to increase to deliver more blood to a damaged body part.
In translation, a cytosine in tRNA pairs opposite
A. uracil. B. guanine. C. thymine. D. adenine.
DNA evidence suggests that not all___ share the same lineage; as a result, a new taxonomic group is being developed.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of natural selection?
A) depending on the food a turtle eats, it shell may grow faster or slower B) a bird's beak is able to effectively crack the seeds it encounters C) bacteria can be effectively killed by treatment with bleach D) sometime during human's life they break a bone and it heals E) human beings develop freckles from being out in the sun