Skip to Content.
Sympa Menu

nafex - Re: [NAFEX] It doesn't take a genus to see that there must be some relationship...

nafex@lists.ibiblio.org

Subject: North American Fruit Explorers mailing list at ibiblio

List archive

Chronological Thread  
  • From: Pat Meadows <pat@containerseeds.com>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] It doesn't take a genus to see that there must be some relationship...
  • Date: Thu, 17 Feb 2005 09:54:03 -0500

On Thu, 17 Feb 2005 09:46:25 -0500, you wrote:

>The growing tips of plants are made up of two or three layers, any one
>of which might be genetically different from the other or have part of
>it genetically different than the rest. As these cells divide, they
>continuously make new cells that make up the new plant. In a graft
>hybrid, or even a naturally occurring chimera, then, each cell is not a
>combination of two different genetic individuals, but different parts
>of a leaf, fruit, flower, or stem are made up of genetically different
>cells. Just where these different cells are located on the plant
>depends on where the cell lies in the meristem, or growing point.
>Chimeras are not that uncommon; they're just not noticed unless the the
>two genes express themselves differently visually, one without
>chlorophyll, for instance.
>

I wasn't familiar with this term used in a botanical sense,
so I looked it up and found:

"an individual, organ, or part consisting of tissues of
diverse genetic constitution"

Would a person with one blue eye and one brown eye be
considered a 'chimera' in this sense of the term?

*Why* would this happen within an individual organism, such
as one apple tree or one tomato plant?

Pat

--
ContainerSeeds.com - vegetable, herb, fruit, and
edible flower seeds for successful container growing.
http://www.containerseeds.com




Archive powered by MHonArc 2.6.24.

Top of Page