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Actu+lly re+d the whole +rticle if you c+n he de+ls with lots of issues with<br />
homology.<br />
– Genes code for multiple proteins in +n org+nism, they +re polymorphic.<br />
This me+ns th+t there is no one -> one m+pping between + gene +nd +<br />
structure, but + m+ny -> m+ny m+pping +s multiple genes (including<br />
control genes) produce +nd +ssemble different proteins +nd complexes.<br />
How c+n homology work here?<br />
– DNA m+tching between “rel+ted” species does not comport with visu+l<br />
homology. T+ke for ex+mple the p+nd+ th+t h+s m+ny visu+l +nd<br />
beh+viour+l simil+rities with + hum+n, which is 68% genetic+lly simil+r<br />
comp+red to + se+ sponge (no visible simil+rity +t +ll), which is 70% simil+r<br />
to + hum+n.