Question

what is dna fingerprinting?
a) a technique in which dna samples are cut by restriction enzymes, and the resulting fragments are separated via electrophoresis creating a pattern of bands.
b) the technique of quickly making copies of dna using enzymes and a cyclic fluctuation in temperature
c) a process used to separate fragments based on charge and size.
d) a process in which the size and order of dna segments is determined.

Explanation:

DNA fingerprinting involves cutting DNA samples with restriction enzymes, then separating the resulting fragments via electrophoresis to create a pattern of bands. This technique is used for identification purposes. Option a describes this process accurately. Option b refers to PCR (Polymerase Chain Reaction) which involves making copies of DNA with enzymes and cyclic temperature changes. Option c describes gel - electrophoresis (a part of the DNA fingerprinting process but not the whole technique). Option d is a more general description of a process related to DNA segments (not specific to fingerprinting).

Answer:

A. A technique in which DNA samples are cut by restriction enzymes, and the resulting fragments are separated via electrophoresis creating a pattern of bands.