re:epidermal structures

[brushes2@juno.com]

Tom Hopp wrote:

"...while working with transgenic experimental animals, that gene
expression is exquisitely sensitive to mutations in the regulatory,
non-portine-coding regions..."

Absolutely correct. What is even more interesting is that these same
changes that "suppress gene expression.... and/or promote it in some
other ectopic locale." can also influence the phenotype. Changes in gene
activity can have dramatic effects on morphology. And the mutations may
be only in timing the expression of genes or gene families.

Cheers,

Alan
brushes2@juno.com
92 High Street
Mystic, CT. 06355
(860) 572-1717