lab 5 Flashcards

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1
Q

what areas did PCR have an impact on

A
  • gene mapping
  • cloning
  • DNA sequencing
  • gene detection
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2
Q

PCR template

A

any form of ds DNA

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3
Q

PCR ingredients

A
  • reaction buffer
  • DNA subunits
  • DNA polymerase
  • 2 DNA primers
  • template strand
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4
Q

what 2 basic processes does PCR make use of

A
  1. complementary DNA strand hybridization
  2. DNA strand synthesis via DNA polymerase
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5
Q

DNA polymerase used

A

Taq polymerase from Thermus aquaticus

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6
Q

steps of PCR

A
  1. denaturation
  2. primer annealing
  3. primer extension
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7
Q

term for PCR machine

A

thermal cycler

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8
Q

temperature/thermal cycling

A

rapid heating and cooling of thermal block in thermal cycler

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9
Q

temp at denaturation step

A

94 degrees Celsius

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10
Q

temp at annealing step

A

60 degrees Celsius

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11
Q

temp at extension step

A

72 degrees Celsius

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12
Q

temperature cycle =

A

denaturation + annealing + extension

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13
Q

PCR generates DNA of a…

A

precise length and sequence

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14
Q

which cycle are fragments of precise length generated

A

third

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15
Q

what are targets of random insertions?

A

introns

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16
Q

what does SINE stand for

A

short repetitive interspersed elements

17
Q

ex. of SINE

A

Alu element

18
Q

where does Alu name come from

A

Alu I restriction enzyme recognition site found in this sequence

19
Q

where are we looking for Alu sequence

A

PV92 locus on chromosome 16

20
Q

dimorphic

A

Alu element present in some ind. but not others

21
Q

homozygous Alu presence

A

941 bp

22
Q

homozygous Alu absence

A

641 bp

23
Q

heterozygous Alu

A

both 641 and 941 bp

24
Q

bioinformatics

A

discipline that integrates mathematical, statistical, and computer tools to collect/process biological data

25
Q

InstaGene matrix

A

consists of suspension of negatively charged beads which bind divalent cations
- need to remove divalent cations because they will assist enzymes in DNA degradation

26
Q

supernatant

A

contains clean, intact genomic DNA

27
Q

functions of incubation steps

A
  1. breakup of connective tissue
  2. inactivates DNases
28
Q

master mix

A

mixture of nucleotides, buffer, and Taq DNA pol

29
Q

dye that makes DNA primers yellow

A

tartrazine

30
Q

is manual PCR possible?

A

yes