The mystic notion that the human soul will live forever after death has had a polyphyletic origin.
On the question as to whether descent was monophyletic or polyphyletic Darwin expressed no dogmatic opinion.
But what are we to say with regard to the series of repeated accidents which the polyphyletic hypothesis would seem to demand?
He believed in saltatory evolution, in polyphyletic descent, and in the greater plasticity of the organism in earlier times.
polyphyletic: derived or descended from several stems or sources.
The problem of the monophyletic or polyphyletic origin of the human race has also been much discussed.
Let us now consider what the polyphyletic hypothesis involves.
This family is undoubtedly of polyphyletic origin but for convenience it is here considered as a single family.
Griffiths clearly showed that Noble's Brachycephalidae was a polyphyletic assemblage.
The real difficulty of classification of the fungi lies in the polyphyletic nature of the group.
polyphyletic pol·y·phy·let·ic (pŏl'ē-fī-lět'ĭk)
Descended or derived from more than one ancestral stock or source.
Of or being the theory that blood cells are derived from several different stem cells, depending on the particular blood cell type.
Relating to a taxonomic group that does not include the common ancestor of the members of the group and whose members have two or more separate origins. A group that consists of flying vertebrates would be polyphyletic, as bats and birds independently evolved flight and do not share a common ancestor. Compare monophyletic, paraphyletic.