Restriction enzymes have proved so useful in manipulating DNA because
A. they cut at defined sites.
B. the sticky ends make it very easy to allow recombination of any type of DNA.
C. they protect eukaryotes against virus attack.
D. they cut RNA molecules.
E. they cut at defined sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
E
You might also like to view...
For every 10°C increase in temperature, the rate of most chemical reactions will
(a) double. (b) triple. (c) increase by 100 times. (d) stop.
The human brain contains at least ____ neurons
a. 100 billion b. 100 million c. 500 million d. 100 thousand e. 50 million
In ________ the gametophyte is more obvious than the sporophyte
A) conifers B) mosses C) grasses D) ferns
Helminth adulthood and mating occur in the
A) intermediate host. B) transport host. C) definitive host. D) tertiary host.