They are not using DNA to perform cryptography (or any thing else).
from the original abstract: In this project, We do not intended to utilize real DNA to perform the cryptography process; rather, We will introduce a new cryptography method based on central dogma of molecular biology. Since this method simulates some critical processes in central dogma, it is a pseudo DNA cryptography method.
The human body contains about 100g of DNA. You're saying about 2E15 grams, or 20 trillion human body's worth, of DNA is not only released into the atmosphere but then escapes the earths gravitational pull and enters interplanetary space. Sounds unlikely.
you can have inosine. It's a nucleic acid - not found in naturally occurring DNA but used in molecular biology because it has the useful property of binding to all other bases equally. So GATTICA is a possible DNA sequence.
Re:There IS parity checking...in a sense
on
Parity Code And DNA
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· Score: 1
No, they are not talking about stoppping mismatches caused by pairings of,for example, two purines. They are talking solely about interpurine and interpyrimidine mismatches. From the original paper, referred to in the article:
'Error-coding analysis however suggests that mixed parity alphabets with interpurine or interpyrimidine distances of one have an inherently low fidelity.'
The point is that each purine differs from the other by at least 2 donor acceptor positions, as does each pyrimidine. The fact that there is even parity in all 'codewords' is a fancy way of saying that any two purines (or pyrimidine) in the system must differ by an even number of donor/acceptor positions.
Again, from the original paper: 'The role of D/A patterns is therefore twofold, serving to bind associating complementary pairs, while simultaneously opposing non-complementary associations. Any set of complementary nucleotides is approximately equivalent with respect to the former, however, a parity code alphabet is optimal with respect to the latter, ensuring that the association of non-complementary pyrimidine-purine pairs will be opposed in two of three D/A positions.'
You can get away with a MS in bioinformatics no problem. I work with loads of bioinformaticians who don't have PhDs (UK) but who are doing interesting work. Importantly, the work actually matters (i used to work for an internet consultancy writing ecommerce crap - now in genomics research).
I run a list for bioinformatics developers - it may be worthwhile to ask the question there:
http://bioinformatics.org/mailman/listinfo/biode ve lopers
Slashdot Mirror
They are not using DNA to perform cryptography (or any thing else).
from the original abstract:
In this project, We do not intended to utilize real DNA to perform the cryptography process; rather, We will introduce a new cryptography method based on central dogma of molecular biology. Since this method simulates some critical processes in central dogma, it is a pseudo DNA cryptography method.
The human body contains about 100g of DNA. You're saying about 2E15 grams, or 20 trillion human body's worth, of DNA is not only released into the atmosphere but then escapes the earths gravitational pull and enters interplanetary space.
Sounds unlikely.
http://en.wikipedia.org/wiki/Runaway_evolution
for keeping track of all the ideas and bits of informatation.
journler
I would like to but how do I message you?
you can have inosine. It's a nucleic acid - not found in naturally occurring DNA but used in molecular biology because it has the useful property of binding to all other bases equally. So GATTICA is a possible DNA sequence.
No, they are not talking about stoppping mismatches caused by pairings of,for example, two purines. They are talking solely about interpurine and interpyrimidine mismatches.
From the original paper, referred to in the article:
'Error-coding analysis however suggests that mixed parity alphabets with interpurine or interpyrimidine distances of one have an inherently low fidelity.'
The point is that each purine differs from the other by at least 2 donor acceptor positions, as does each pyrimidine. The fact that there is even parity in all 'codewords' is a fancy way of saying that any two purines (or pyrimidine) in the system must differ by an even number of donor/acceptor positions.
Again, from the original paper:
'The role of D/A patterns is therefore twofold, serving to bind associating complementary pairs, while simultaneously opposing non-complementary associations. Any set of complementary nucleotides is approximately equivalent with respect to the former, however, a parity code alphabet is optimal with respect to the latter,
ensuring that the association of non-complementary pyrimidine-purine pairs will be opposed in two of three D/A positions.'
that's what it means to 'see' something
You can get away with a MS in bioinformatics no problem. I work with loads of bioinformaticians who don't have PhDs (UK) but who are doing interesting work. Importantly, the work actually matters (i used to work for an internet consultancy writing ecommerce crap - now in genomics research).
e ve lopers
I run a list for bioinformatics developers - it may be worthwhile to ask the question there:
http://bioinformatics.org/mailman/listinfo/biod
http://www.amazon.com/exec/obidos/ASIN/039458404X/ qid=1022747724/sr=1-1/ref=sr_1_1/002-3828351-14848 60
a good kitchen knife, a large saucepan, a saute pan.
except the movement doesn't really occur in discrete steps - the molecules are moved in a continuum.