13-02-2013, 09:43 AM
DNA Computation
DNA.ppt (Size: 488.5 KB / Downloads: 105)
Introduction to DNA
Adleman’s experiment
Cutting Edge Technologies
Pros and Cons
Conclusion
What is DNA?
DNA stands for Deoxyribonucleic Acid
DNA represents the genetic blueprint of living creatures
DNA contains “instructions” for assembling cells
Every cell in human body has a complete set of DNA
DNA is unique for each individual
Can DNA Compute?
DNA itself does not carry out any computation. It rather acts as a massive memory.
BUT, the way complementary bases react with each other can be used to compute things.
Proposed by Adelman in 1994
Operations
Meltingbreaking the weak hydrogen bonds in a double helix to form two DNA strands which are complement to each other
Annealingreconnecting the hydrogen bonds between complementary DNA strands
Mergingmixing two test tubes with many DNA molecules
AmplificationDNA replication to make many copies of the original DNA molecules
Selectionelimination of errors (e.g. mutations) and selection of correct DNA molecules
The Smallest Computer
The smallest programmable DNA computer was developed at Weizmann Institute in Israel by Prof. Ehud Shapiro last year
It uses enzymes as a program that processes on on the input data (DNA molecules).