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Thanks, Dr. Scouten, for your very informative explanation of genes. I know to have cystic fibrosis both your parents must have the gene. Ray ----- Original Message ----- From: "Charles Scouten" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, October 24, 2005 2:08 PM Subject: Re: Bad genes in families > Your DNA from the chromsomes in the cell nucleus came equally from either > of the parents. Males get the small y from their father, and the > unbalanced X comes entirely from the mother. > > Another exception is the mitochondria, they are thought to have once been > an invading species, then became a symbiont, as they produce the energy > for the cells use. They have their own DNA, outside the nucleus. The > sperm has no mitochondria, all your mitochondria comes entirely from the > mother. A recent discovery was that one type of diabetes is inherited > only in the mothers line, as defective mitochondria. Male baldness and > some other disorders are usually inherited only from the mothers line, > even though she is not bald, because it is on the X chromosome. If you > have a Y, it came from Dad, therefore the X is from Mom. > > > Cordially, > Charles W. Scouten, Ph.D. > myNeuroLab.com > 5918 Evergreen Blvd. > St. Louis, MO 63134 > Ph: 314 522 0300 x 342 > FAX 314 522 0377 > [log in to unmask] > http://www.myneurolab.com > > > -----Original Message----- > From: Parkinson's Information Exchange Network > [mailto:[log in to unmask]] On Behalf Of rayilynlee > Sent: Sunday, October 23, 2005 2:03 PM > To: [log in to unmask] > Subject: Re: Bad genes in families > > Maryse, I don't know, just think I read it somewhere, something about > mitochondrial DNA Ray > ----- Original Message ----- > From: "M.Schild" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Saturday, October 22, 2005 10:57 PM > Subject: Re: Bad genes in families > > >>> Isn't it through the mother's side that one inherits the bad stuff? >> >> >> why just the motherīs side? >> Maryse >> >> ---------------------------------------------------------------------- >> To sign-off Parkinsn send a message to: >> mailto:[log in to unmask] >> In the body of the message put: signoff parkinsn > > ---------------------------------------------------------------------- > To sign-off Parkinsn send a message to: > mailto:[log in to unmask] > In the body of the message put: signoff parkinsn > > ---------------------------------------------------------------------- > To sign-off Parkinsn send a message to: > mailto:[log in to unmask] > In the body of the message put: signoff parkinsn ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn