If a restriction endonuclease cuts a linear DNA three times, how many fragments should there be after
the DNA is subjected to electrophoresis through an agarose gel?
a. 1
b. 2
c. 3
d. 4
e. 5
D
You might also like to view...
Variation is usually introduced by the process of _________?
a. random fertilization
b. mutation
c. random mating
d. recombination between homologous chromosomes during meiosis
e. all of the above
An aquifer is most closely related to ____
a. sea water b. lake water c. stream water d. glacial water e. groundwater
Cells surrounded by plasma membranes and no cell wall need to maintain a certain cell volume because an influx of water would cause the cell to explode. In order to reduce cell volume, these cells increase the activity of their sodium-potassium pumps.
a. true b. false
What molecule is the body’s main energy source?
a. oxygen b. carbon dioxide c. glucose d. fats e. proteins