Forensic Science DNA

In DNA replication, polymerases:

• help assemble the new DNA

  strands in proper base sequence

• enable the strands to unwind from

  the helix

• separate the strands of the double

  helix

• none of the above

The shape of the DNA molecule is a double __________________?

• S

• helix

• rope

• curve

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG

• TAC ACT GTC

• GTA AGT GAC

• CAT TCA CTG

If one side of a DNA strand is A-A-T-C-G-G-A, what would the other side be?

• A-A-T-C-G-G-A

• G-G-C-A-T-T-AG

• T-T-A-G-C-C-T 

• C-C-G-A-T-T-C

Tags

NGSS.HS-LS1-1

Terri is creating a model of DNA, which of these shapes illustrates how her model should look? 

• A

• B

• C

• D

Tags

NGSS.HS-LS1-1

DNA finger printing relies on:

• Difference in patterns of genes between individuals

• Difference in order of genes between individuals

• Difference in junk DNA patterns between individuals

• All of these

What is the function of DNA in forensics?

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RFLP stands for...

When cut by a ___________________, a specific gene or locus is removed from a chromosome. A different ________________(same) will cut it into fragments of different lengths which can be separated by electrophoresis.

What is the first step in RFLP?

• Extract the DNA from the cells and isolate it.

• Extract gene to be tested with a restriction enzyme?

• Cut the gene into fragments using a restriction

  enzyme.

• Separate the fragments using electrophoresis.