Re: Re: HYB: If you could ignore hybridizing barriers...(q

Walter Pickett <waltseed2@yahoo.com> wrote:    //////// Another reason for reversing the cross giving different results is the process of methylation of DNA. Some DNA in the pollen (and in sperm of animals) will have methyl moleculews azttached during pollen formation. This shuts off those genes for that generation. Then when the pollen and eggs are made for the next generation, the methyl molecules are stripped off, and the process is repeated.
When the DNA is replicated before regular cell divission, the same DNA that has the attached methyls will be replicated with attached methyls.
SBy this method, some genes from the father's side sit out the generation. Or they are just turned down in some cases, still showing some effect.
This was discovered just a few years back.

So then, if I'm extrapolating correctly,  Assuming (of course) that the reason flats don't make pollen is because the pollen genes are blocked by methyl. It's possible then that if you could get a flat/flat cross and crossed the resulting seedlings then potentially the methyls could be stripped off the pollen making genes and the F2 seedlings could produce pollen? 
   
  christian
  ky
  -----------------------------------------------------------------
To sign-off this list, send email to majordomo@hort.net with the
message text UNSUBSCRIBE IRIS
Bring photos to life! New PhotoMail  makes sharing a breeze. 

---------------------------------------------------------------------
To sign-off this list, send email to majordomo@hort.net with the
message text UNSUBSCRIBE IRIS
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index