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  • From: Lucky Pittman <lucky.pittman@murraystate.edu>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: [NAFEX] chimera
  • Date: Thu, 17 Feb 2005 15:16:58 -0600

At 09:54 AM 2/17/2005 -0500, you wrote:
Would a person with one blue eye and one brown eye be
considered a 'chimera' in this sense of the term?
No, that's a condition called 'heterochromia irides', sometimes a spontaneously occurring pigmentation defect, but in other cases, its related to heritable conditions, which sometimes are also accompanied by deafness and partial albinism, etc.

I've seen photos of bovine chimeras created, back in the early days of embryo transfer work by taking 4-day-old fertilized Holstein and Hereford eggs(blastocyst stage), removing cells from each, mixing them together, then implanting them into a new evacuated zona pellucida(the 'shell' surrounding a mammalian ovum), and implanting them in a synchronized recipient cow, who carried the calf to term and delivered it. The resulting calf had a haircoat that was a patchwork of black, red, and white spots, depending on which one of the two eggs the cells that produced those areas of skin/hair came from.
I don't know what the animal looked like at maturity - this was a photo of a 300-400 lb. calf.

Lucky




*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
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