Segments, limbs, homology, and co-option.
Arthur
W
W
Ecology Centre, University of Sunderland, Sunderland SR1 3SD, UK. wallace.arthur@sunderland.ac.uk
Jowett
T
T
Panchen
A
A
D000818:Animals; D005075:Biological Evolution; D047108:Embryonic Development; D005121:Extremities / Q000196:embryology*