This is a cross-post from a one I made yesterday in the ATMB forum, to which I have received no response from a mod, so I am assuming it is OK.
I am undergoing raging cognitive dissonance.
In Cecil’s (early?) 2001 masterpiece Do twins have identical DNA? a reader humbly approached the Master and said that $20 hung in the balance on DNA identification of who is who of identical twins. The answer from on-high was “yes.”
The matter was gone over again in Cafe Society, in DNA trickery - has this plot device ever been used in a crime story?, in which His column was cited.
The cause of my distress is this, from February 2013: Twins’ DNA hinders France sexual assault investigation. BBC cites somebody or other who should know that “ordinary” DNA analysis would not help, but some sort of further examination of a huge number of nucleotides may (or will, not clear) sort the two brothers out.
Of course, Cecil, writing in 2001, may have chosen not to use His foreknowledge of all things, in order not to spook His acolytes.
It would be nice to bump the CS thread, but my spirit tells me to lay my soul bare here.
Also I would feel bad if Paul Cunningham was incorrectly relieved of $20.
To that post/this one I would like to add:
The full and correct (“base pairs”) money quote from the recent French case is the following, from “an expert” being quoted by the journalist:
“For a normal analysis, 400 base pairs [of nucleotides] which make up DNA…”[adds the journalist: In the case of identical twins,] “we would be looking at billions.”
The article states that it is merely a matter of money, and that it could be done. Of course, the journalist could be totally wrong, the article is false and that it cannot be done, in which case I withdraw my post from ATMB.
Also, in all events, my faith in the Master, tottering for a moment, is restored: the original column is a Staff report by hawkeye.
Finally, a little more searching has turned up these threads in which the issue is discussed:
Paternity testing of children of identical twins
Can two people be convicted of the same crime?
A criminal, cloned