DNA replication always proceeds from the ________ of the incoming nucleotide to the ________ of the previously added nucleotide.
Fill in the blank(s) with the appropriate word(s).
Ans: 5 '-phosphate / 3'-hydroxyl
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In recombinant DNA methods, the term vector can refer to _____
A) the enzyme (endonuclease) that cuts DNA into restriction fragments B) the "sticky end" of a DNA fragment C) a SNP marker D) a plasmid used to transfer DNA into a living cell E) a DNA probe used to identify a particular gene
Which of the following emergence factors has contributed to the HIV/AIDS epidemic?
A) climate change B) rapid pathogen adaptation and change C) increasing travel to endemic areas D) exotic pet and meat trade
Which of the following is not a typical capsid shape?
A. Helical B. Tetrahedral C. Complex D. Icosahedron
In nondisjunction one or more pairs of chromosomes ____
a. are deleted b. are duplicated c. undergo translocation
d. undergo random mutations e. fail to separate