PubMed · 7382889
Some thoughts on evolution.
Abstract
The sparsity of transitional forms and the abrupt appearance of higher taxa in the fossil record are enigmas for the neo-Darwinian theory of evolution. If the cell is considered to be a steady state system then mutations affecting non-regulatory proteins will have far less effect on the steady state than mutations affecting regulatory proteins. This latter type of mutation, when expressed in multicellular biological systems, is a sufficient explanation for the discontinuities observed between species. Such a mechanism, however, has its own implications for any theory of evolution.
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R A Conyers, N L Fazzalari. 1980. Some thoughts on evolution.. https://doi.org/10.1016/0306-9877(80)90034-1
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