Exam 16: DNA: The Indispensable Forensic Science Tool

Capillary electrophoresis is the preferred technology for characterization of STRs.

HV1 and HV2 are:

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)A technique for separating molecules through their migration on a support medium while under the influence of an electrical potential B)Different fragment lengths of base pairs that result from cutting a DNA molecule with restriction enzymes C)A genetic locus useful for determining gender D)Small structures outside the nucleus that supply energy to the cell E)Cells derived from the inner cheek lining F)The building blocks of proteins G)A technique that simultaneously detects more than one DNA marker in a single analysis H)An unstained object adjacent to an area on which biological material has been deposited I)A technique for replicating or copying a portion of a DNA strand outside a living cell J)A rod-like structure in the cell nucleus composed of DNA, along which the genes are located K)A repeating unit of DNA consisting of one of four bases-adenine, guanine, cytosine, or thymine-attached to a phosphate-sugar group L)The process of joining two complementary strands of DNA to form a double-stranded molecule M)A region of a DNA molecule that contains short segments of three to seven repeating base pairs N)A short strand of DNA used to target a region of DNA for replication by PCR O)DNA from skin cells transferred onto the surface of an object by simple contact -Chromosome

The concept of simultaneously extracting, amplifying, and detecting a combination of STRs is known as:

Tandem repeats are useful for forensic scientists because they provide a way to distinguish one individual from another through DNA typing.