Deck 17: Dna Typing

Question 1

Innocence Project focuses on the use of DNA to convict criminals.

Answer 1

False

Question 2

DNA is only found in the nucleus of red blood cells.

Answer 2

False

Question 3

Nuclear DNA has a double helix shape.

Answer 3

True

Question 4

Mitochondrial DNA has a circular shape.

Question 5

CODIS is the abbreviation for the Combined DNA Identification System.

Question 6

STR allows for scientists to less numerous base pairs in DNA typing than RFLP.

Question 7

The different forms of genes are known as alleles.

Question 8

Repeats in base pair sequences without intervening base pairs are referred to as tandem repeats.

Question 9

Less than 90% of all human being's DNA is identical.

Question 10

Elimination samples of DNA are samples of DNA from all personnel at a crime scene.

Question 11

The first commercial technique for DNA typing was PCR.

Question 12

RFLP uses restriction enzymes to cut DNA at certain polymorphic locations.

Question 13

The denaturing process in PCR results in the joining of double helixes.

Question 14

It is not possible to determine gender using forensic DNA tests.

Question 15

Y-STRs allow for gender determination of gender.

Question 16

Which of the following is NOT a nucleotide?

A) adenine
B) cytosine
C) guanine
D) fluorocine

Question 17

The instrument used in PCR is called a

A) polychromasomal reagent
B) parachromal reagent
C) thermal cycler
D) regenerative cycler

Question 18

There are currently _______ STR loci that are commonly amplified and analyzed in forensic cases.

A) 10
B) 13
C) 15
D) 20

Question 19

Mitochondrial DNA makes up _____ of the total DNA in the body.

A) 1%
B) 2%
C) 50%
D) 90%

Question 20

In a gel electrophoresis system, DNA strands are separated based on

A) chromosome number
B) chromosome locus
C) length
D) width

Question 21

A long strand of DNA may have ______________ number of base pairs.

A) 1000
B) 10,000
C) 100,000
D) 1,000,000

Question 22

In cell nucleus of human beings there are _____ pairs chromosomes.

A) 23
B) 46
C) 92
D) 128

Question 23

Individuals who inherit the same allele for a particular characteristic from both parents are said to be _____________ with respect to that gene.

A) heterozygous
B) homozygous
C) homogenous
D) none of the above

Question 24

The two types of polymorphism in genes are

A) length polymorphism and width polymorphism
B) sequence polymorphism and length polymorphism
C) sequence polymorphism and locus polymorphism
D) width polymorphism and locus polymorphism

Question 25

The location in the human body used to obtain buccal samples is the:

A) anal cavity
B) hands
C) inside of cheeks
D) none of the above

Question 26

In gel electrophoresis, the DNA segments are placed at the _____ end of the chamber and move to the ______ end of the chamber.

A) positive, negative
B) positive, neutral
C) negative, positive
D) negative, neutral