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Intro to Forensics Science > DNA > Flashcards

DNA Flashcards

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Biology 101 flashcards
1
Q

blood test that breaks open blood cells and rearranges them in crystals. Workds on any organism with blood

A

Takayama Test

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2
Q

STR

A

Short Tandem Repeats

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3
Q

Is STR human specific? Can it determine sex? Can you analyze mixed samples?

A

Yes it only works with human DNA, thanks to the meloginan gene we can determine the sex and if the sample is nuclear DNA we can analyze mixed samples

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4
Q

Phenalthaline, Takeama, STR, if STR doesn’t receive a result go back and try a ouchterlomy

A

Sequence for blood testing

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5
Q

Dirthclothes phospotase, P30, STR

A

Sequence for semen testing

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6
Q

Amalase, STR

A

Sequence for Saliva testing

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7
Q
  1. Extract 2. Amplify (PCR) 3. Sequence 4. Sequence comparison
A

Mitocondrial DNA steps

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8
Q

type of DNA that is passed on maternally

A

mTDNA

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9
Q

300 base pairs, unique to reason

A

Hypervariable Reagan 1 and 2

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10
Q

Bones -powder
Teeth are grinder
Hair- telogen

A

mTDNA samples

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11
Q

How many states have active legislation for partial DNA matches?

A

10

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12
Q

Which states/ regions have active legislation against partial DNA

A

Maryland and District of Columbia

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13
Q

Is Nuclear DNA an Identification?

A

Yes

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14
Q

Where is DNA found in blood

A

white blood cells

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15
Q

Why can’t wee look at red blood cells for DNA?

A

they do not contain any DNA

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16
Q

Where do we find DNA in Saliva

A

Off of cheek cells

17
Q

Where can DNA be found in a cell?

A

the Nucleus and Mitochondria

18
Q

Which type of DNA is more plentiful?

A

Mitochondrial

19
Q

2 copies per cell, 2x23 chromosomes, one copy per parent, unique to the individual (minus identical twins), 3 billion base pairs

A

Nuclear DNA

20
Q

Why is DNA testing Valuable?

A

its an identification, can be retrieved from evidence, widely used, unique to the individual, and DNA is the same throughout the human body.

21
Q

how many crime labs use Nuclear DNA

A

190

22
Q
  1. extraction- take samples and apply them so that they release their dna
  2. amplification- its kinda like a copy machine
  3. STR detection- genetic analyzer see what is unkown and compare it to the known
A

STR Analysis Steps

23
Q

Standard says that you lave to look at _ to _ bases

A

13 and 20

24
Q

overarching check of the lab

A

Quality assurance

25
Q

speaks about particular test (Make sure the equipment works)

A

Quality control

26
Q

Locus

A

location

Intro to Forensics Science (2 decks)

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