Restriction enzymes have proved so useful in manipulating DNA because
A) they cut at defined sites AND the sticky ends make it very easy to allow recombination of DNA with RNA.
B) they cut at random sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
C) they cut at defined sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
D) they protect eukaryotes against virus attack AND they cut both RNA and DNA.
E) they protect eukaryotes against virus attack AND the sticky ends make it very easy to allow recombination of DNA with RNA.

Question

Restriction enzymes have proved so useful in manipulating DNA because
A) they cut at defined sites AND the sticky ends make it very easy to allow recombination of DNA with RNA.
B) they cut at random sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
C) they cut at defined sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
D) they protect eukaryotes against virus attack AND they cut both RNA and DNA.
E) they protect eukaryotes against virus attack AND the sticky ends make it very easy to allow recombination of DNA with RNA.

Quizplus · Accepted Answer

Restriction enzymes cut at specific recognition sites, allowing for targeted manipulation of DNA. The sticky ends produced by these cuts are complementary and can easily be paired to form recombinant DNA molecules. This feature makes it easy to combine different types of DNA, such as joining fragments from different sources, or inserting foreign DNA into plasmids.

Restriction Enzymes Have Proved So Useful in Manipulating DNA Because