TUTTEE ACADEMY LOGO
broken image
  • Home
  • About Us
  • Subjects 
    • CHEMISTRY
    • BIOLOGY
    • PHYSICS
    • MATHEMATICS
    • PSYCHOLOGY
    • ECONOMICS
    • BUSINESS
    • COMPUTER SCIENCE
    • CHINESE
    • ENGLISH
    • SPANISH
    • IBDP IA / EE
    • IBDP TOK
    • ONLINE TUTORIAL
  • Exam Boards 
    • IBDP
    • IBMYP
    • IGCSE & GCSE
    • HKDSE
    • GCE A-LEVELS
  • Courses 
    • IBDP Tuition
    • GCE A-Level Tuition
    • IBMYP Tuition
    • I/GCSE Tuition
    • HKDSE Tuition
  • Admission Test Prep 
    • PREDICTED GRADE
    • SAT / SSAT
    • UKISET (UK)
    • BMAT
    • UKCAT / UCAT
    • LNAT
    • TMUA (Cambridge)
  • Student Results 
    • IBDP STUDENT RESULTS
    • IGCSE & GCSE MATHEMATICS
    • A-LEVEL STUDENT RESULTS
    • IGCSE STUDENT RESULTS
    • GCSE STUDENT RESULTS (UK)
    • HKDSE STUDENT RESULTS
    • OUR STORIES
  • Question Bank
  • Resources
SCHEDULE A LESSON NOW

GCSE Biology Question Analysis - Biology - DNA

GCSE Biology Question Analysis

· GCSE Biology,biology

GCSE Biology Question Analysis Topic: Biology - DNA

Exam Question:

A burglar in a huff forgot to wipe off his blood stains from the place of crime where he was involved in a theft. Name the technique which can help in identifying the burglar from the blood stains. Describe the technique.

Answer:

For GCSE Biology, you should know:

A forensic method known as DNA fingerprinting uses DNA features to identify people. The idea behind DNA fingerprinting is that, like fingerprints, no two people have exactly the same nucleotide sequence. The extraction of usable DNA is the first stage in the DNA fingerprinting process. The usable DNA is then digested with restriction enzymes to yield restriction fragments length polymorphisms, or RFLPs, which are subsequently sorted by size using gel electrophoresis.

The sorted DNA fragments are subsequently transferred by southern blotting from the gel to the surface of the nylon. In order to match different DNA samples, radioactive probes are then washed over the nylon surface to enable their connecting to any DNA fragments of the identical composition.

Work hard for your GCSE Biology examination!

End of analysis. Great!

broken image

 

CLICK HERE TO LEARN MORE ABOUT OUR GCSE BIOLOGY COURSES!

SIGN UP FOR AN GCSE BIOLOGY TUTORIAL NOW WITH OUR EXPERT TUTORS!

 

Subscribe
Previous
GCSE Mathematics Question Analysis - Mathematics -...
Next
IBDP Physics Question Analysis - Physics - Short Questions
 Return to site
Profile picture
Cancel
Cookie Use
We use cookies to improve browsing experience, security, and data collection. By accepting, you agree to the use of cookies for advertising and analytics. You can change your cookie settings at any time. Learn More
Accept all
Settings
Decline All
Cookie Settings
Necessary Cookies
These cookies enable core functionality such as security, network management, and accessibility. These cookies can’t be switched off.
Analytics Cookies
These cookies help us better understand how visitors interact with our website and help us discover errors.
Preferences Cookies
These cookies allow the website to remember choices you've made to provide enhanced functionality and personalization.
Save