edthecynic
Censored for Cynicism
- Oct 20, 2008
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I really wish YOU knew what the hell YOU were talking about, but I'm afraid you are hopeless.Let me try this again.Quick example of what changing a single nucleotide will do the genetic message:
a. The nucleotides are 'read' in groups of three...Let's say that this short sentence is the information needed for the cell to build a protein:
"The sun was hot but the old man did not get his hat."
Simple, easily understood.....
b. That sentence represents a gene, OK?..I know, much too short...but it's just an example!
Let's assume that each letter corresponds to a nucleotide base, and each word represents a codon.
The definition of 'codon:' a unit that consists of three adjacent bases on a DNA molecule and that determines the position of a specific amino acid in a protein molecule during protein synthesis.
How do Cells Read Genes?
So....a mutation would leave out, or add, any one letter in the message, and then it is not the same message at all...the 'mutation' makes the DNA meaningless at best....or lethal at worst!
Let me show you how: drop the first letter, and watch what that message becomes:
"hes unw ash otb utt heo ldm and idn otg eth ish at."
It is the messenger RNA that reads the condon, which is one half of the matched base PAIR. Mutations do not alter the individual matched PAIRS with unmatched PAIRS, but just the ORDER of the matched base PAIRS.
Your sentence example is impossible because if you change one half of the PAIR read by the mRNA its valence electrons will no longer match its mate on the DNA strand and therefore will not form a matched base PAIR. Your misspelled triplets will be rejected by the DNA strand. Only the triplet that matches the corresponding bases of the DNA molecule will be accepted.
Get it now????
".... if you change one half of the PAIR read by the mRNA its valence electrons will no longer match its mate on the DNA strand and therefore will not form a matched base PAIR. ..."
I really, really wish that there was someone on the other side who knew what they were talking about.
Let me prove once and for all that that description doesn't cover a moron like you.....
Watch: "...no longer match its mate...."
There is no mate during replication of the DNA.
The helix opens up, and each strand is single at that time.
The Helix opens up at the base PAIRS, and then mRNA reconstructs each single strand into a double helix by MATCHING the base in each strand with its corresponding mate forming a new PAIR identical to the original PAIR.