CSI Part 1 Lesson 25 Mastery Check

Collection of DNA fragments that can be used to identify genetically unique individuals

• Amplify

• DNA Ladder

• DNA Fingerprint

• DNA Analysis

Lab technique used to amplify DNA sequences to produce billions of copies of a fragment of DNA.

• Short Tandem Repeats (STR)

• Polymerase Chain Reaction (PCR)

• DNA Fingerprint

• Flanking Sequence

Variable segments of DNA, contain repeats of same sequence of nucleotides one after another

• Short Tandem Repeats (STR)

• Flanking Sequence

• Gel Electrophoresis

• Allele

Gel Electrophoresis separates molecules by

• Shape

• Color

• Size

• Atom

Having two identical alleles at a given locus.

• Heterozygous

• Homozygous

• Frequency

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

• convert the DNA into gel

• cut the DNA into fragments

• change the color of the DNA

• produce longer sections of DNA

Which two bear species are most closely related?

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

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

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 

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

• DNA is negatively charged so attracted to the positive end of the unit
• DNA is positively charged to attracted to the negative end of the unit
• the agarose gel in negatively charged
• the agarose gel is positively charged