The age structure diagram for the United States is
most like
a. A.
b. B.
c. C.
d. D.
e. none of these.
Answer: b
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RNA and DNA differ
A) in that RNA contains ribose and DNA contains deoxyribose. B) in that RNA contains nucleosides and DNA contains nucleotides. C) in that RNA contains uracil and DNA contains thymine. D) both A and C. E) All of these are correct.
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What will be an ideal response?
In which condition are both alleles expressed in the heterozygous phenotype?
A) complete dominance B) codominance C) pleiotropy D) epistasis
As an evolutionary biologist, you are asked to predict the chances of a taxon's future survival on a geological time scale excluding the possibility of a mass extinction. Which of the following factors could you use to in-form your prediction?
a. the estimate for background extinction rate b. the age of the taxon under question c. the taxon's average reproductive fitness during the past year d. the amount of evolutionary change the taxon experienced in the past e. A and B