Technology Flashcards

(52 cards)

1
Q

similarities of DNA and RNA microarrays

A

both end with DNA microarray

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2
Q

DNA microarray

A

do for entire genome

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3
Q

RNA microarray

A

only target those genes
purify RNA
make cDNA

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4
Q

aCGH (array comparative genomic hybridization)

A

saw huge differences and compared reference to genome to another genome

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5
Q

Genome wide technologies

A

DNA/RNA microarrays
aCGH
NGS (next generation sequencing)

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6
Q

applications of DNA microarrays

A
  • gene transcription measurement
  • SNP/CNV
  • chromatin immune precipitation
  • clinical diagnostics
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7
Q

uses glass surface with probes with a specific nucleotide sequence to anneal to DNA

A

DNA microarrays

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8
Q

hybridization based technology

A

denature so cDNA can find probe and bid firm

wash DNA not attached

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9
Q

how many unique features do DNA microarrays have?

A

2.1-3 million

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10
Q

uses DNA with chromophore

A

DNA microarrays

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11
Q

how many different probes are there for each gene in DNA microarrays?

A

22

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12
Q

southern blot

A

dna

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13
Q

northern blot

A

rna

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14
Q

western blot

A

protein

most common

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15
Q

two microarray platforms

A

spotted arrays

affymetrix

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16
Q

uses 2 colors and glass

A

spotted arrays

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17
Q

1 or more color to compare 2 samples against each other

A

affymetrix

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18
Q

which is more common?

spotted array or affymetrix

A

affymetrix

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19
Q

what do spotted arrays contain?

A

oligonucleotides 50-70mer

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20
Q

What are samples labeled with in spotted arrays?

A

CY5 (red)

CY3 (green)

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21
Q

samples loaded and mixed and hybridized simultaneously to a single slide

A

spotted array

22
Q

oligonucleotides to detect genes

A

anneal to certain area of gene

multiple areas

23
Q

what percent of genome is expressed in oligonucleotides?

24
Q

what is RNA used to measure?

A

gene transcription

25
what is DNA used to measure?
CNV or SNP difference between genomes
26
what do aCGH measure?
congenital abnormalities | cancer
27
how many oligonucleotides are used in aCGH?
>1 probe per kb genome wide in human
28
what is the length of oligonucleotides used in aCGH?
25-100 bp
29
t/s arrays function well for high copy number sequences
false
30
is the control or cancer labeled green?
control
31
is the control or cancer labeled red?
cancer
32
what color is shown if cancer and control are expressed in both?
yellow
33
what length do affymetrix use of oligo?
25 mer length
34
how many different olives are there for each gene in affymetrix?
22
35
single sample goes on a single array located in cartridge
affymetrix
36
illumina SNP genotyping
know difference between normal or WT allele | SNP extension
37
what is exon sequencing?
next generation sequencing
38
sanger sequencing
DNA sequencing
39
capillary dna sequencers
whole genome project
40
next generation DNA sequencing
multiple applications | the reality of whole genome sequencing at a reasonable cost
41
have a piece of DNA you want to sequence and need multiple copies of this part of DNA
sanger sequencing
42
separation b electrophoresis, fluorescent tags
sanger sequencing
43
what terminate the reaction in sanger sequencing
dNTPs | ddNTPs
44
sanger sequencing outcome
dozens of gels | label with p52
45
deep sequencing outcome
one run | 5 days
46
How how does it take to analyze the DNA in whole genome sequencing?
2 months/2 days
47
what company was formed for NGS?
454
48
sequencing in 454 company
emulsion PCR | pyrosequencing
49
single molecule PCR in microsphere compartments
emulsion PCR
50
chemiluminescent detection of pyrophosphate
pyrosequencing
51
use sedimentation and fragmentation with oil in water emulsion
emulsion pcr
52
what do you add in emulsion pcr
micro beads