Ribose differs from deoxyribose by having:a
two attached bases.
b. one less oxygen.
c. an extra hydroxyl group.
d. an extra carbon in the ring.
e. one less carbon in the ring.
C
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Vascular cambium (wood) evolved independently in several different groups of vascular plants
A. true B. false
During the process of cloning, a small circular DNA molecule that has been modified is inserted into a bacterium for replication. What is this molecule known as?
a. gene b. allele c. plasmid d. enzyme
Describe the lysogenic cycle of a bacteriophage and/or a prophage. Why do you think it would be useful to the virus to have this cycle?
What will be an ideal response?
Which of the following types of reproductive barriers separates a pair of moth species that could interbreed but for the fact that the females' mating pheromones are not attractive to the males of the other species?
A) temporal isolation B) behavioral isolation C) mechanical isolation D) gametic isolation