DNA Test Review

A nucleotide is composed of:

• four nitrogeneous bases

• DNA-RNA complex

• deoxyribose sugar, phosphate group and a nitrogeneous base

• hydrogen bonds and nitrogen bases

The structure labeled c. is a(n):

• hydrogen bond

• deoxyribose sugar

• nitrogen base

• phosphate group

Tags

NGSS.HS-LS1-1

The structure labeled e. is a(n):

• nucleotide

• amino acid

• nitrogen base pair

• peptide

Tags

NGSS.HS-LS1-1

Adenine pairs with _____ in DNA.

• cytosine

• guanine

• thymine

• uracil

Nuclear DNA can be described as ______ evidence.

• direct, biological, class

• circumstantial, biological, individual

• circumstantial, biological, class

• direct, physical, individual

What process is used to make copies of DNA strands that are found at a crime scene?

• gel electrophoresis

• polymorphisms

• polymerase chain reaction

• southern blot

If DNA evidence can not be dried for storage, it should be ______.

• frozen

• catalyzed

• treated with probes

• placed in alcohol

The sequence of DNA bases below is repeated 11 times right after the other. This can best be described as _____.

A   C   G   C   T   A   C   T   C   A   G

• PCR

• STR

• VNTR

• AFIS

The mitochondrial DNA of an unidentified victim of crime is being analyzed. The forensic scientist take a sample of mitochondrial DNA from the father of who they think is the victim. There is not a match. Does this mean this is definitely not the father of the unidentified victim?

• Yes, if the DNA does not match they are not related.

• No, they may not have tested enough loci to provide a match.

• No, mitochondrial DNA only is inherited from the mother

• Yes, half the DNA had to come from the father

Tags

NGSS.HS-LS3-1

STRs are usually:

• 2-5 bases long

• in the non-coding portion of DNA

• repeated sequences

• preferred by forensic analyists.

• All of the choices.