Forensic Science Test 4 Review

Front 1

An automated technique for color-coding and separating, replicating and analyzing repeating sequences within DNA is called...

Back 1

Short Tandem Repeat (STR)

Front 2

What is the chromosome designation for the male sex?

Back 2

XY

Front 3

What type of cell does not contain nuclear DNA

Back 3

Red blood cells

Front 4

DNA is used in forensic cases for....

Back 4

1

Front 5

Y-STR testing is useful in forensic DNA analysis for...

Back 5

determining what male contributed to a mixed sample

distinguishing male and female DNA in rape cases

Front 6

Which of the following surfaces will cause a blood drop to rupture and create satellite spatter?

Back 6

Wood

Front 7

____________ blood pattern is produced when blood drops leave via centrifugal force from an object that has accumlated blood on its surface.

Back 7

Cast-off

Front 8

To determine the angle of impact of a blood drop, an analyst ...

Back 8

Takes the width of the drop and divides it by the length of the drop (not including the tail) and then takes the inverse sine of the ratio

Front 9

Drug testing for employment is only for federal and state employees as most corporations do not want to spend the time or money to do workplace drug testing

Back 9

False

Front 10

In drug level testing for workplaces, the federal government established levels for each drug at above zero to allow for the fact that all people use drugs and that only those who abuse them should be punished.

Back 10

False

Front 11

Which of the following are most useful and are most commonly done in workplace drug testing (select all that apply)

Back 11

hair

urine

Front 12

Confirmatory tests are tests to....

Back 12

are proof positive that an unknown substance is actually the substance it was believed to be

Front 13

Which blood type is the universal donor?

Back 13

O

Front 14

Time since intercourse and location where deposited have a great deal of impact on whether or not semen can be detected

Back 14

True

Front 15

Phadebas Reagent Paper tests for which of the following substances?

Back 15

Saliva

Front 16

Brentamine Fast Blue is used for ....

Back 16

presumptive test for seminal acid phosphatase

Front 17

PCR was important to forensic DNA testing as it allowed for very small amount of DNA to be replicated fairly quickly.Selected Answer:True

Back 17

True

Front 18

What possible sources for comparative DNA do police in the US commonly use

Back 18

CODIS

Search warrants

Abandoned DNA

Front 19

A small section of repeating DNA (2-7 base pairs long) is known as a....

Back 19

1

Front 20

Chemical stimulants such as mesculine and cocaine have what kinds of impact on body systems?

Back 20

increased heart rate and blood pressure

Front 21

Viterous humor is...

Back 21

the fluid from the eye

Front 22

Forward spatter is produced by a gunshot exit wound

Back 22

True

Front 23

Blood pattern analysis is helpful for...

Back 23

1. Corroboration of statements

2. Apprehension of suspects

3. Reconstruction of past events

4. Exoneration of the accused

Front 24

How is directionality determined in blood spatter?

Back 24

the narrowed end of an elongated blood drop will point in the direction of travel

Front 25

To determine a DNA match between an unknown sample and a known sample, the analyst merely needs to compare the peaks on the analysis output. If they are all in the same place and of the same amplitude (height) is it considered rare enough to be a match

Back 25

False

Front 26

What biological items are used as class characteristics for identification?

Back 26

ABO blood groups, RH factor secretor status, enzyme markers

Front 27

Single drops of blood that collect around a parent stain as a result of hitting a rough target surface are called....

Back 27

satellite spatter

Front 28

When a partially dried bloodstain is altered by contact or wiping it is called a/an....

Back 28

skeletonized pattern

Front 29

most useful in workplace drug testing for determining long term abuse of drugs?

Back 29

Hair

Front 30

Which blood type is the universal recipient?

Back 30

AB

Front 31

Kastle-Mayer test

Back 31

Swabbed sample changes to pink to show potential for blood being present

Front 32

Luminol test

Back 32

Emits a blue-white to yellow light in a darkened room to show potential for blood being present

Front 33

Hexagon OBTI

Back 33

Test strip produces lines to determine if human blood is present

Front 34

Takayama test

Back 34

Prepared microscope sample forms crystals to confirm the presence of blood

Front 35

Which blood type is the universal donor?

Back 35

O

Front 36

AB

Back 36

Has A and B antigens and makes no antibodies

Front 37

O

Back 37

Has no antigens and produces Anti-A and Anti-B antibodies

Front 38

A

Back 38

Has only A antigens and produces Anti-B antibodies

Front 39

B

Back 39

Has only B antigens and produced Anti-A antibodies

Front 40

All expirated blood will show evidence of air bubbles mixing with the blood drops.

Back 40

False

Front 41

most likely to cause a mist-like dispersion of blood drops less than 1 mm in diameter?

Back 41

gunshot

Front 42

Blood drops in the shape of a ball but as it reaches terminal velocity it becomes teardrop shaped.

Back 42

False

Front 43

An automated technique for color-coding and separating, replicating and analyzing repeating sequences within DNA is called..

Back 43

1

Front 44

Each child inherits more chromosomes from their mother than their father because the mother provides the egg, while the father only gives sperm.

Back 44

False

Front 45

How many chromosomes does a normal person have?

Back 45

23 pairs

Front 46

What biological items are used as class characteristics for identification?

Back 46

1

Front 47

A small section of repeating DNA (2-7 base pairs long) is known as a....

Back 47

Microsatellite

Short Tandem Repeat (STR)

Front 48

A non-secretor is someone who secretes their Rhesus factor in their body fluids.

Back 48

False

Front 49

Any degredation of forensic evidence samples is due to poor collection and preservation.

Back 49

False

Front 50

A nucleotide is..

Back 50

a structure on DNA which codes for the production of specific proteins in our body

Front 51

Forensic phenotyping uses genetic information within your DNA to make possible determinations for how you would look

Back 51

True

Front 52

What does PSA stand for?

Back 52

Prostate Specific Antigen (confirmatory test for seminal fluid)

Front 53

How long can SAP be detected?

Back 53

72 hours

Front 54

Presumptive Test for Sperm

Back 54

Brentamine Fast-Blue

Front 55

Presumptive test for blood?

Back 55

1. Luminol (light test. sprayed reagent reacts with blood)

2. Adler Test (a stain is swabbed, placed on a spot plate and combined with reagent)

Front 56

Confirmatory test for blood?

Back 56

1. Takyama Test or Teichman Test (when heated, blood will form crystals)

Front 57

Presumptive Test for human blood?

Back 57

Hexagon OBTI (works like a pregnancy test)

Front 58

Confirmatory test for human blood?

Back 58

Ouchterlony (gel with blood droplets) or Hematrace (works like a pregnancy test)

Front 59

Individualizing characteristics for DNA?

Back 59

mini-satellites (VNTRs) and microsatellites (STRs)

Front 60

Larger sections of repeating DNA?

Back 60

Minisattelites (9-80 base pairs)

Variable Number of Tandem Repeats (VNTRs)