Patricia, Thank you for enlightening me and the rest of the list members who were assuming they were correct in determining the sex of the offspring. It just proves it does not matter how many years you have been breeding, you can always learn something new. I try each day to keep an open mind.
I also find the science of heredity fascinating! Patricia, thanks again. Patricia Powers Pratt Cavaliers -----Original Message----- From: Patricia Ide <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Saturday, December 22, 2001 5:25 PM Subject: Re: [CKCS-L] Female puppies >Actually, a genetic roll of the dice determines the sex of a fetus. The >female has two X chromosomes. The sperm donor, or sire, has only one X and a >Y that is only half the size or so of the X. Nature rolls the dice at >conception and decides which of the two female X's and which of the two male, >an X or a Y, will combine in the ova to produce the fetus. If it is XX it's >a female and if it is XY it is a male. Mendel's Law says that that, out of >100 puppies bred, approximately half should be male and half should be >female. In humans there are slightly more males (1%) born than females but >more females grow up. I have never heard this said about dogs. If it is >true, then it would be only one percent more. If you have bred one hundred >pups, you might like to check your records to see if this supposition proves >to be correct. > >Pat Ide > >========================================================= >"Magic Commands": >to stop receiving mail for awhile, click here and send the email: >mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20NOMAIL >to start it up gain click here: >mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20MAIL > > E-mail [EMAIL PROTECTED] for assistance. >Search the Archives... http://apple.ease.lsoft.com/archives/ckcs-l.html > >All e-mail sent through CKCS-L is Copyright 1999 by its original author. > ========================================================= "Magic Commands": to stop receiving mail for awhile, click here and send the email: mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20NOMAIL to start it up gain click here: mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20MAIL E-mail [EMAIL PROTECTED] for assistance. Search the Archives... http://apple.ease.lsoft.com/archives/ckcs-l.html All e-mail sent through CKCS-L is Copyright 1999 by its original author.
