genetic engineering Flashcards

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1
Q

genetic engineering

A

manip of an org’s DNA

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2
Q

tranformed organisms

A

DNA altered by GE

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3
Q

recombinant DNA

A

mol of DNA consists of DNA from two sources joined togther

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4
Q

final goal of techniques

A

getting a host org to prod proteins encoded by a new gene that has been inserted into the host’s DNA

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5
Q

why are plasmids a perfect vector

A

can be transcribed by having simple bacterial promoter region upstream of the gene

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6
Q

main req of org

A

large quantites of a protien can be prod as cheaply and easily as possible

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7
Q

org needs to be

A

grow faast
easily manip
naturally occing vectors- plasmids

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8
Q

good option for org

A

yeasts or bacteria

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9
Q

b4 insersion of gene

A

same r,endonucleases used to cut plasmid

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10
Q

where do r.endo cut plasmid

A

specific recognion sites

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11
Q

what does r.endo create in plasmid

A

complimentary sticky ends

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12
Q

what forms bw bases

A

h bonds

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13
Q

DNA ligase

A

joins DNA togther by caalysing formation of phosphodiester bonds

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14
Q

waht are ppd bonds formed bw

A

sugar and phosphate groups of the backbone

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15
Q

transformation

A

injecting the vector in2 the chosen bacterium

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16
Q

why are vectors contaning genes moved to living cells

A

replication and/ expression

17
Q

host cell

A

cells recieving the vector

18
Q

vectors

A

lasrge mols which dont readily cross cell membranes

19
Q

how are vectors made permeable

A

electroporation
viruses
microinjection
liposomes

20
Q

electroporation

A

cells subjected to high voltage pulse, temporarily distrupts the mem and allows vectpr to enter cell

21
Q

viruses

A

vector incrorp into a virus

inj host cels by inj gen mat- containing selected gene

22
Q

microinjection

A

gen mat inj using a micro pipette

23
Q

Ti plasmids

A

only plasmids plant cells take up

24
Q

liposomes

A

DNA warpped in a lipid mol allowing it to pass through phospholipid bilayer

25
Q

steps of gene cloning

A

isolate gene
produce recombinant plasmid
tranfrom bacteria that will express the gene

26
Q

isolating euk gene to be cloned

A

extrac mrna
reverse transcriptase
prod cdna- no introns
pcr to amplify cdna

27
Q

identifyin dna transformed w/recomb plasmids

A

marker genes- abiotic res/flourescent genes

28
Q

Recognition sites of sticky eNTs are

A

Palindromic- read same way backwards