FS-DNA & Serology Practice Exam

The primary function of DNA is to

• make proteins.
• store and transmit genetic information.
• control chemical processes within cells.
• prevent mutations.

The segments of DNA used to do DNA typing (analysis) are short repeating sections called

• Telogens
• Telomers
• Tandom Repeats
• Restrictive enzymes

The number of loci (locations) in a person’s DNA that are looked at to do DNA analysis is

• 13
• 3-7
• 15-35
• 8

The computer database that contains all the saved DNA profiles is called

• AIFIS
• RFLP
• CODIS
• PDQ

In order to increase the amount of DNA for analyzing, forensic scientist use which technique to amplify (copy/make more) the sample?

• STR
• RFLP
• PCR
• All of the above (all other answers are correct)

Today, forensics labs usually use short tandem repeats (STR) when analyzing DNA. These repeats can be how many base pairs long?

• 15-20
• 3-7
• 100-200
• 30-75

During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will be

• TTGCATG.
• AAGTATC.
• CCTAGCT.
• GGATCGA.

In order to cut DNA into different size fragments that can then be ran through electrophoresis, what needs to be added to the DNA?

• Recombinant enzymes
• stains
• tandem repeats
• restriction enzymes

The Innocence Project is using which type of evidence to re-look at cases in which people in jail claim to be innocent of their crime?

• skulls
• DNA
• blood
• hair

Molecules of DNA are composed of long chains of

• amino acids
• fatty acids
• monosaccharides
• nucleotides