DNA Structure

According to the gel electrophoresis results shown, which suspect committed the crime?

• Suspect 1

• Suspect 2

• Suspect 3

• not enough data to tell

True or False?

Since identical twins have the EXACT same DNA, they also have the EXACT same fingerprints.

• True

• False

In DNA, the nitrogenous base Adenine will always bond with

• Cytosine

• Adenine

• Thymine

• Guanine

What process is used to separate fragments of DNA?

• Restriction mapping

• Polymerase chain reaction

• Sanger sequencing

• Gel electrophoresis

What size DNA fragments travel through the gel the fastest?

• Larger fragments

• Smaller fragments

• Medium-sized fragments

What can be determined about the DNA in bands I and II?

• Band I contains a longer DNA sequence than band II.

• The DNA bands have the same DNA sequence

• The DNA bands are the same size

• Band II contains a longer DNA sequence than band I.

sequence of repeating bases in the non-coding regions of DNA that are used in DNA profiling

• STR (Short Tandem Repeat)

• PCR (Polymerase Chain Reaction)

• VNTR (Variable number of Tandem Repeats)

According to the dna evidence, which suspect left DNA at the crime scene?

• suspect 1

• suspect 2

• suspect 3

• none of the suspects

In this DNA fingerprint, the _______ pieces travel the farthest. (blue)

• shortest

• longest

Tags

NGSS.HS-LS3-1

If guanine makes up 19% of the nucleotides in a sample of DNA from an organism, then cytosine would make up _____ percent of the bases.

• 19%

• 62%

• 31%