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OCR A-Level Biology Genetic Engineering(1) Summary

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Handwritten Summary by an Oxford Medical Student which covers all content necessary for an A* in Genetic Engineering at OCR Biology A-Level.

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October 11, 2023
Number of pages
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Written in
2023/2024
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Summary

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Producing a
genetic profile :




:DNA is extracted s Can be lengthened by polymerase chain reaction

C
Sample digested using restriction endonuclease
.

is


DNA fragments are separated
.
3
using dectrophoresis
4
.
Radioactive or fluorescent DNA probes are added to identify the fragments
S
used
X-rays or light recognize patterns
.


or can be to

↳used for forensic profiling ,
proving paternity screening for genetic
,
disease

Electrophores is :




fragetcatoon CNAisplacedatthe cathodeandmovesthroughtheaga
hi it




Polymerase Chain Reaction :

"DNA fragment is Separated using DNA helicase
2 ·

Primers are annealed to either side

3 .
DNA is
synthesised with free nucleotides to form two new strands

DNA
sequencing :




:DNA is mixed with a primer and an excess of nucleotides
2 .

A thermal
cycler is used for PCR

.
3 DNA Polymerase builds up new Strands of DNA
4 .

Terminator bases are incorporated randomly to produce all possible DNA
fragments
S
Fragments separated by Gel electrophoresis
.



are

6
Data is fed back into
computer which fragments
.


reassembles the
a
genome by overlapping
Uses data to build theoretical models of
Computational Biology :


biological systems
Analysing the genomes of pathogen :


·

Find the source of infection
·
Track disease outbreaks

Detect antibiotic resistance Develop new drugs
·




DNA
Barcoding :

Identify species with a short section of DNA


spliceosomes Joins exons
together to form mRNA
:




Proteomics :



Study of an
organism's amino acid sequence and protein complement
Synthetic biology :


↳ Genetic Gene therapy
Engineering
·




Biotechnology Synthesis of organisms
·



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Handwritten A-Level notes by an Oxford University Medical Student that specifically target the content needed for an A-A*.

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