The Cas9 nuclease is able to cleave target DNA at a single precise site by ________.
A. recognizing a palindromic sequence on the DNA and cleaving at that site leaving sticky ends
B. associating with a single-stranded DNA molecule that binds to its complement on the genome to be cleaved
C. using a guide RNA that hybridizes to a unique sequence on the target DNA molecule
D. altering its active site to bind to and cleave any DNA sequence that is targeted
Answer: C
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a. the brain b. fat cells c. the intestines d. kidneys
Which of the following statements is true regarding the wavelengths of light used in photosynthesis?
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What is the resource-ratio hypothesis?
A) Late successional species are not affected by species of previous stages. B) There are three strategies in terms of resource use by plants. C) There is a pattern of changing allocation of carbon to aboveground and belowground tissues. D) The process of succession is determined by who gets there first.
Where on this phylogenetic tree of primate evolution do you find the evolution of humans and species very closely related to humans?
A. No. 1 B. No. 2 C. No. 3 D. No. 4 E. No. 5