MYTUTOR SUBJECT ANSWERS

559 views

Describe the application of DNA profiling to determine paternity and also in forensic investigation.

Organisms have short sequences of bases, which are repeated many times. These are called satellite DNA. These repeated sequences vary in length from person to person.

The DNA is copied using PCR and then cut up into small fragments using restriction enzymes.

Gel electrophoresis separates fragmented pieces of DNA according to their size and charge. This gives a pattern of bands on a gel, which is unlikely to be the same for two individuals.

This is called DNA profiling. DNA profiling can be used to determine paternity (comparing DNA of offspring against potential fathers) and also in forensic investigations (identifying suspects or victims based on crime-scene DNA) to get evidence to be used in a court case.

Zana Katarina L. IB Biology tutor, IB Maths tutor, IB Psychology tutor

2 years ago

Answered by Zana Katarina, an IB Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

25 SUBJECT SPECIALISTS

£22 /hr

Andres R.

Degree: Chemistry (Masters) - Warwick University

Subjects offered: Biology, Chemistry

Biology
Chemistry

“Hi I'm Andrés, a chemistry student at the University of Warwick. I have just finished a research degree (MSc) at Warwick where I also studied for my bachelors in biomedical chemistry. I have much passion and enthusiasm for chemistry a...”

£20 /hr

Matt E.

Degree: Molecular Biology (Doctorate) - Queen's, Belfast University

Subjects offered: Biology, Science+ 4 more

Biology
Science
Maths
Human Biology
Chemistry
-Personal Statements-

“I am a first year PhD student at the School of Biological Sciences at Queen's University, Belfast, having graduated with a first class honours degree in Biology from QUB. My research focuses on the molecular mechanisms underpinning th...”

MyTutor guarantee

£20 /hr

Michael J.

Degree: History (Bachelors) - University College London University

Subjects offered: Biology, History+ 1 more

Biology
History
.HAT.

“About Me: I am a History student at UCL. My interests in History are mainly modern, focusing on the Russia and the Cold War and more recently the history of political thought and tea. I also have a love of Science from my A-levels. I ...”

About the author

£20 /hr

Zana Katarina L.

Degree: Psychology (Bachelors) - Durham University

Subjects offered: Biology, Psychology+ 1 more

Biology
Psychology
Maths

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Posts by Zana Katarina

Describe one example of transient polymorphism.

Discuss the relative importance of genetic and cultural evolution in the recent evolution of humans.

Analyze the changes in concentration of atmospheric carbon dioxide using historical records.

Behaviour can be innate because it is genetically based and can be inherited.

Other IB Biology questions

Distinguish between active and passive immunity

What is the difference between meiosis and mitosis?

What are the differences between Carbohydrates and Lipids?

Explain enzyme-substrate specificity

View IB Biology tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok