Forensic Science: DNA Evidence

Front

What does the structure of DNA resemble?

Back

A twisted ladder.

Front

In gel electrophoresis, DNA molecules migrate from _____ to _____ ends of the gel.

Back

Negative to positive.

Front

According to the rules of base pairing between complementary strands of DNA, what pairs with what?

Back

A pairs with T; and C pairs with G.

Front

What shape illustrates how a model of DNA should look?

Back

A double helix.

Front

Which of the following is NOT a source of DNA?

Back

Red blood cells.

Front

What are the building blocks of DNA called?

Back

Nucleotides.

Front

What are the four nitrogenous bases found in DNA?

Back

Adenine (A), Thymine (T), Cytosine (C), Guanine (G).

Front

What is the function of DNA polymerase in DNA replication?

Back

To synthesize new DNA strands by adding nucleotides.

Front

What is the significance of the double helix structure of DNA?

Back

It allows for the efficient packing of genetic information and provides stability.

Front

What is the role of gel electrophoresis in forensic science?

Back

To separate DNA fragments based on size for analysis.