module 6 manipulating genomes Flashcards

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1
Q

outline the production of a DNA profile

A

extract DNA and multiply using PCR
cut strands with restriction endonuclease
separate using gel electrophoresis
add fluorescent probes (hybridisation)
use UV light to see tags

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2
Q

outline steps of PCR

A

95C for 30 seconds to break H bonds
55c add primers to bind to ends
75c for one minute for DNA polymerase to add bases and build complementary strands

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3
Q

outline DNA sequencing

A

add primers, DNA polymerase, and nucleotides
heat to 95c to break h bonds and
50c to allow primers to bind to strands
60C so DNA polymerase can build strands
add terminators bases that result in different length strands
split by length using capillary sequencing fed into a computer to anaylse

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4
Q

isolating desired genes (insulin)

A

mRNA extracted from pancreatic cells
treated with reverser transcriptase (cDNA)
the plasmid obtained from bacteria and cut with restrictions enzymes
DNA ligase fuse plasmid and cDNA
recombinant plasmid introduced to host cells then leave to multiply

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5
Q

somatic gene line therapy

A

replacing mutant alleles with healthy alleles

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6
Q

germline therapy

A

insert healthy allele into an egg cell

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