CSI Wildlife Check in

To repeatedly copy a molecule such as DNA, usually until there are billions of copies present.

• Amplify

• Base Pairs

• Flanking Sequence

• DNA Fingerprint

Answer explanation

To repeatedly copy a molecule such as DNA, usually until there are billions of copies present. This process is called amplification.

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

• Amplify

• DNA Ladder

• DNA Fingerprint

• DNA Analysis

Answer explanation

DNA Fingerprint is a collection of DNA fragments used to identify unique individuals. It is the correct choice for this question.

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

Answer explanation

Polymerase Chain Reaction (PCR) is a lab technique used to amplify DNA sequences by producing billions of copies of a fragment of DNA. It is the correct choice for this question.

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

• Short Tandem Repeats (STR)

• Flanking Sequence

• Gel Electrophoresis

• Allele

Answer explanation

Short Tandem Repeats (STR) are variable segments of DNA that contain repeats of the same nucleotide sequence. They are the correct choice because they exhibit this characteristic.

Gel Electrophoresis separates molecules by...

• amino acids

• Color of DNA fragment

• Size of DNA fragment

• Atomical structure

Answer explanation

Gel Electrophoresis separates molecules based on their shape and size.

Tags

NGSS.HS-PS1-3

Having two identical alleles at a given locus.

• Heterozygous

• Homozygous

• Frequency

Answer explanation

Homozygous means having two identical alleles at a given locus. It is the correct choice.

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

Answer explanation

The laboratory procedure known as gel electrophoresis is used to separate and analyze DNA fragments based on their size and charge.

In preparation for an electrophoresis procedure, restriction 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

Answer explanation

Enzymes are added to DNA to cut it into fragments for electrophoresis, not to convert it into gel, change its color, or 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

Answer explanation

Bear 1 and Bear 3 are the most closely related bear species. They share the closest genetic similarities and have a common ancestor.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

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 

Answer explanation

DNA fingerprinting works because no two people, except identical twins, have exactly the same DNA.