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DNA Profiling
S1 Science
Biological Sciences
Learning outcomes
Understand the moral and ethical
implications of DNA profiling.
Success criteria
State what is meant by “DNA
profiling”.
Describe examples of the use DNA
profiles in the following
situations:
–Paternity
–Siblings
–Immigration
–Criminal justice
–Insurance
–Inherited diseases
Key questions?
• What is a DNA profile?
• Why would you want to take one?
• When can one be taken?
• What are the implications of having one
taken?
What is DNA profiling?
• DNA profiling is the identification of
individuals on the basis of their
respective DNA profiles.
Gel electrophoresis
Gel electrophoresis
Mum
Dad
Child 1
Child 2
Child 3
Mum
Dad
Child 1
Child 2
Child 3
Criminal justice
•
14.02.88 - Body of Lynette White found.
•
1990 - 5 men tried for murder - 3
convicted.
•
1992 - Successful appeal.
•
2000 - a Fresh DNA sweep of Lynette’s
flat.
–
Spots of blood located and analysed.
–
DNA profile obtained – no complete match
on database.
•
Jan 2002 - Screening campaign.
–
•
Partial match to 70 people.
February 2003 - an individual on
database was a ‘close match’.
–
That individual 3 yr old when Lynette
White was murdered.
•
Family members screened.
•
A ‘perfect match’ found.
•
July 2003 – Jeffrey Gafoor pleads
guilty.
Discussions
For each of the following, discuss:
– What could DNA profiling be used to do?
– Are there any moral/ethical implications to
consider?
– Paternity testing
– Siblings
– Insurance
– Inherited diseases
Learning outcomes
Understand the moral and ethical
implications of DNA profiling.
Success criteria
State what is meant by “DNA
profiling”.
Describe examples of the use DNA
profiles in the following
situations:
–Paternity
–Siblings
–Immigration
–Criminal justice
–Insurance
–Inherited diseases