title: Evolution. Ratcheting the evolution of multicellularity.
authors.affiliation: Santa Fe Institute, Santa Fe, NM 87501, USA. elibby@santafe.edu.
authors.forename: Eric
authors.initials: E
authors.lastname: Libby
authors.affiliation: School of Biology, Georgia Institute of Technology, Atlanta, GA 30332, USA.
authors.forename: William C
authors.initials: WC
authors.lastname: Ratcliff
mesh_terms: D000818:Animals; D017209:Apoptosis; D005075:Biological Evolution; D002477:Cells / Q000166:cytology*; D008018:Life Cycle Stages