dan said:
Speciation does result in loss of information. It is widely known in breeding that plants and animals which are highly bred, lack information which was available to the original wild type. Plants highly bred often lack nature disease resistance and must rely upon pesticides to remain healthy.
But they have just as much information in their genomes as their ancestors. The amount of information in the individual genome has not decreased.
If speciation required loss of information, given any related group of species we could find the ancestral one easily - it would have all the information in all the others, either in huge individual genomes or fantastic variety among many individuals. This is not observed.
dan said:
Most of the successes in breeding come from guided recombination.
Hence the difficulty of producing new species by ordinary breeding.
And note the word "most". Some of the successes involve the recognition and proliferation of new mutations and various genetic alterations - things not available in the gene pool to begin with. New information.
dan said:
"There is no master genome containing all the variations"
how do you know this?
Such a master genome, or anything like it, has never been observed in any organism, and there are solid mechanistic reasons it would not work.
Master gene pools of the kind required have not been observed either, although they might work if certain conditions were met.
dan said:
again, you confuse the size of the genome with information. There are many organisms with vastly less information present in their genomes which have genomes which are quite large.
I was talking about related organisms - organisms with similar efficiencies of genomic organization. Such as "mammals" or "birds". In such related animals, the information carried is a direct function of the size of the genome.
dan said:
The size of the genome does not necessary diminish with information loss.
Either the size of the individual genome or the size of the gene pool must diminish, to conclude that information has been "lost" between two related organisms.
dan said:
Of the some 3000 mutations which have been observed in fruit flies, none are an example of information gain. Not only that, but none have been beneficial!
Of the many mutations observed in laboratory fruit flies, every unique one has been a gain in the total information of the gene pool of that species of fruit flies. And some provide properties such as longevity, greater reproductive capability in certain situations, greater flying speed or endurance, more sensitivity to certain oders, tolerance to heat or cold, etc etc. And many of the others provide the fly with properties or features not found in other flies. Who are you to claim these are not "beneficial" ?