Which step in the creation of cDNA involves the use of reverse transcriptase?

A) step 1
B) step 2
C) step 3
D) step 4


Answer: B

Biology & Microbiology

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Which of the following collects urine and leads to the ureter on the outside of the kidney?

a. The renal artery b. The urethra c. The urinary bladder d. The renal pelvis

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What is the term for all of the places on earth

in which life can be found?

a. biosphere b. biogeography c. lithosphere d. hydrosphere e. stratosphere

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Which of the following reduces linkage disequilibrium by disrupting overrepresented haplotypes and by generating new ones?

A) sexual reproduction B) genetic recombination C) crossing over D) All of the above.

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Which of the following statements concerning rheumatoid arthritis (RA) is TRUE?

A) It occurs in humans and animals. B) The symptoms are due to damage caused by cytotoxic T cells. C) There is no genetic influence on the likelihood of developing RA. D) Accumulations of antibody complexes lead to inflammation in and destruction of the joints. E) The onset of disease is clearly correlated with having been infected with a specific microbe.

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