H. Allen Orr wrote:

...

> These chromosomes carry all of our genes, which, in turn, are made of DNA.

        It is far from mere pedantry to point out that this is false.
Other genes occur elsewhere in all mammalian cells  -  in mitochondria,
cytoplasmic organelles typically numbering 10^3 per cell.
        One current significance of this fact is that it dooms the pretence
to create mammalian clones by removing the nucleus and then injecting a
nucleus from another individual that you wish to clone.  As succinctly put
by Prof Gareth Jones in one book,
                 ' "clones" will differ from their progenitors (if only
because of extranuclear DNA).  They will not be nearly as similar as
identical twins.'

        The wilful disregard for extranuclear (i.e non-chromosomal) genes
of mammals is one of the clearest degradations of scientific truthfulness
in the recent appalling craze for genetic engineering.

R