From: Thom Quinn (swo@execpc.com)
Date: Tue Jun 17 1997 - 13:42:02 MDT
A fetus with two Y chromosomes and no X's is not viable. The Y
chromosome has only a few genes that are needed to instruct the embryo
(which starts out female) to become male. Only a few master proteins are
encoded on the Y chromosome.
Here are viable (some are more viable than others) combinations:
XX
XY
XYY
XXY
XXYY
XXXYY
XYYY
XXX
XO
This archive was generated by hypermail 2.1.5 : Fri Nov 01 2002 - 14:44:30 MST