Re: examples of miitotic recombination post

Andrewl asked:

I am still searching for answers (no kidding).  When the pollen is
 transferred to the egg, is the DNA that will eventually reside in
 chloroplasts and mitochondria part of the chromosomes of the nucleus,
or
 are they separate?  Seems like something I ought to know about this
 process.
  >>
Andrew,

When you read the Marcotrigiano article "Variegation and Chimeras:
Patterns of Deceit" , see page 777. It explains multiplication of
proplastids and sorting out which occurs in the cytoplasm of mutant and
non mutant cells  Then when mutant cells become completely sorted out,
they become LI or LII mutant tissue which extend up the flower scapes
into ovules. The egges are then self or cross fertilized and new zygotes
, each with proplastids and mitochondria carried to it within  the
cytoplasm in each cell, begin life cycles anew as seedlings.... this is
very basic mechanical transfer of DNA in plastids and mitochondria to
mother cells in ovules through maternal inheritance mechanisms.

Jim Hawes

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