caffeine writes:
None of this is of any relevance, though. Domain, class, family and all the other taxanomic levels are purely arbitrary human inventions. They have no existence in the external world. They are far less clearly defined than the concept of 'kind'.
But at least it is defined by relationship.
My point is that how can all bacteria be one kind, their relationships are avast as the differences between a human and an oak tree.
ZenMonkey writes:
One question occurred to me as I was putting this little quiz together. Can we say that the degree of difference between members of subgroups in one larger group is the same as the degree of difference among the members of subgroups in a larger group at the same level? An example will probably make my question clearer.
The actual level, probably not, much would depend uopn the number of related species ie. The insect order
Coleoptera has over 250,000 species (probably over 300,000, there were 250,000 descibed species when I was in high school biology, 1963) which is much more than the entire mammal class, or for that matter all vertebrates and their lower chordate cousins together the entire echinoderm phylum.
Edited by bluescat48, : [qs] goof
There is no better love between 2 people than mutual respect for each other WT Young, 2002
Who gave anyone the authority to call me an authority on anything. WT Young, 1969
Since Evolution is only ~90% correct it should be thrown out and replaced by Creation which has even a lower % of correctness. W T Young, 2008
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