N

nanos gene 35, 36 expression patterns 38, 38 function 64, 65 National Center for Biotechnology

Information (NCBI) 106 nautilus gene 32, 43, 49, 75 nematodes 8

see also Caenorhabditis elegans nervous system, bilaterian ancestor

123, 124 network 60, 61, 242

neural crest 172-4, 173, 242 neural precursors 32, 34, 50, 75 neuroectoderm 69, 70, 71 newts intraspecific variation 232, 233 limb development 154 Nkx2.x genes 42, 49-50 nodal points (genes) 59, 202

in evolution of character number and pattern 201-4 Notch (N) gene 37, 43, 44

evolution in arthropods 135 Notch (N) receptor protein epithelial appendage development 161, 162 vertebrate segmentation 84, 85 wing patterning 77, 78, 80 notochord 242

evolution 171, 171-2 loss, in ascidians 178-9, 179 novelties, morphological 13, 159-90 definition 160, 242 from older morphological structures 161-9 radical body plan changes 178-84

regulatory evolution as source 214

vertebrate 160, 169-78

0 0

Post a comment