Block 2 Genetics Flashcards

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1
Q

what are the two sections of typical gene

A

the promoter and the coding region

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2
Q

what is recombinant DNA

A

genes from two different organisms combined in vitro in the same molecule

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3
Q

what does the promoter of a gene control

A

transcription of mRNA

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4
Q

where do transcription factors bind

A

the promoter

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5
Q

what is biotechnology

A

the manipulation of organisms or their components to make useful products

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6
Q

what is genetic engineering

A

the in vitro alteration or recombination of genetic material and the reintroduction of the altered genetic material into a living organism

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7
Q

what is the key difference between genetic engineering and other forms of biotechnology

A

genetic engineering manipulates DNA in vitro

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8
Q

what is in vitro

A

combination of DNA outside of living organism

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9
Q

what are some limitations of selective breeding

A

can only breed with genes from related species, no control of gene expression

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10
Q

what is the host when cloning a single gene

A

bacteria

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11
Q

where does the gene of interest get inserted into during cloning

A

the bacterial plasmid

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12
Q

what is a recombinant plasmid

A

a plasmid with the DNA of another organism inserted into it

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13
Q

what is a restriction enzyme

A

cuts DNA at specific sequences, at the restriction site

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14
Q

what is an endonuclease

A

a restriction enzyme

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15
Q

how do restriction enzymes cleave the restriction site?

A

the sugar phosphate gets cleaved in a staggered way

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16
Q

what is the staggered cut of a DNA backbone called

A

sticky ends

17
Q

what does a palindromic sequence of bases identify?

A

a restriction site

18
Q

what is a restriction enzyme that cuts straight down the middle called

A

a blunt end cutter

19
Q

what enzyme is used to stick DNA back together

A

DNA ligase

20
Q

what bonds to DNA ligase form between bases

A

hydrogen bonds

21
Q

what is a cloning vector

A

a DNA molecule that can carry foreign DNA

22
Q

what is a plasmid

A

a circular piece of DNA which can replicate inside a bacterial host cell

23
Q

what is the commonly used host bacteria

A

E coli

24
Q

what gene is not functional when a foreign gene is inserted

A

the lac z gene