Friday, 18 February 2011

What ...No blue roses ?

What ...No blue roses ?
The heart of the problem is whether living things do indeed vary to an unlimited extent... The species look stable. We have all heard of disappointed breeders who carried their work to a certain point only to see the animals or plants revert to where they had started. Despite strenuous efforts for two or three centuries, it has never ...been possible to produce a blue rose or a black tulip.
Norman Macbeth, Darwin Retried: An Appeal to Reason, Harvard Common Press, Boston, 1971, pp. 32-33.

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