-- JQ: is there need to break apart sentences? At least give me my sentences. There is no improvement with reguard to fruit flies.How do you know ? You were talking about new limbs, organs etc.
> The fruit fly's have been very usefull for studying ageing. Thier >life span has been increased through selective breeding not mutations.
Selective breeding uses the variations resulting from mutations and selection of traits to increase the frequency of certain mutations. Not a bad example of evolution I would say.
"Most of the mutations Morgan and his collegues detected in Drosophila were point mutations."
A view of life, Luria, Gould and Singer, p 237
Regards
Pim