Answer:
D. The two students who have two fragments have one restriction site in this region.
Explanation:
The DNA samples from the cheek cells were subjected to digestion with a restriction enzyme. This enzyme is an endonuclease and cuts the DNA at a specific sequence only. This sequence is called a restriction site. If the restriction site is not present in the sample DNA, the restriction enzyme cannot cut it. The presence of one restriction site in the sample DNA would cut it into two DNA fragments.
Similarly, the presence of two restriction sites in each DNA molecule would obtain a total of three DNA fragments per DNA molecule.
Answer:
a identification key
Explanation: because it identifys you
Retina allows the eye to regulate how much lint can enter.
Answer:
Alcoholic fermentation is a complex biochemical process during
which yeasts convert sugars to ethanol, carbon dioxide, and other
metabolic byproducts that contribute to the chemical composition
and sensorial properties of the fermented foodstuffs.
