DNA Profiling Review

Tandem repeats of short DNA sequences (2-5 pairs) with varying numbers of repeats between individuals is called ______________________________.

• VNTR

• STR

• PCR

Tags

NGSS.HS-LS3-2

This is a molecule that cuts DNA at a specific sequence.

• restriction enzyme

• DNA probe

• gene

• electrophoresis

In 1984, Dr. Alec Jeffreys at the University of Leicaster observed that DNA from different individuals contains different polymorphisms. His laboratory developed a technique for isolating and analyzing these variable areas that is known as ___________________________________.

• DNA quantifying, or DNA profiling

• DNA fingerprinting, or DNA profiling

• DNA sorting, or DNA profiling

• DNA investigating, or DNA profiling

The DNA in chromosomes contains approximately ____________.

• 3 million base pairs

• 3 thousand base pairs

• 3 billion base pairs

• 1 base pair

Which suspect is likely guilty?

• Suspect #1
• Suspect #2
• Suspect #3

Tags

NGSS.HS-LS3-2

DNA fingerprinting works because

• Most genes are dominant
• All organisms contain RNA
• The most important genes are different among most people
• No two people, except identical twins, have exactly the same DNA 

Tags

NGSS.HS-LS3-2

What is the purpose of gel electrophoresis?

• helps cut DNA
• count the genes in DNA
• separates DNA based on size
• allows for an exact replicated organism

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

• It allows the strands of DNA to be cut into various lengths for testing
• It restricts the number of base pairs that can be tested in a sample
• It makes the testing simpler by moving the strands into the gel faster
• It charges the DNA strands

Once DNA has been extracted from the nucleus of a cell, it is exposed to ______ ______ that act like biochemical scissors to cut the DNA.

• restriction enzymes

• gel agarose

• clotting factors

• electric shock

Which two bat species are most closely related?

•  Bat 1 and Bat 2
• Bat 1 and Bat 3
• Bat 2 and Bat 3
• There’s no way to tell

Tags

NGSS.MS-LS4-2