2013 Society for Integrative and Comparative Biology Annual Meeting. Nervous system may have evolved twice.
Elizabeth
E
Pennisi
D000818:Animals; D005075:Biological Evolution; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology; D037302:Ctenophora / Q000033:anatomy & histology / Q000166:cytology / Q000235:genetics* / Q000502:physiology; D016678:Genome; D009420:Nervous System / Q000033:anatomy & histology / Q000166:cytology; D009474:Neurons / Q000166:cytology / Q000502:physiology; D017422:Sequence Analysis, DNA