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Titolo:
Heterochrony revisited: the evolution of developmental sequences
Autore:
Smith, KK;
Indirizzi:
Duke Univ, Dept Biol, Durham, NC 27708 USA Duke Univ Durham NC USA 27708Duke Univ, Dept Biol, Durham, NC 27708 USA Duke Univ, Dept Biol Anthropol, Durham, NC 27708 USA Duke Univ Durham NC USA 27708 , Dept Biol Anthropol, Durham, NC 27708 USA
Titolo Testata:
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
fascicolo: 2, volume: 73, anno: 2001,
pagine: 169 - 186
SICI:
0024-4066(200106)73:2<169:HRTEOD>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONODELPHIS-DOMESTICA MARSUPIALIA; CRANIOFACIAL DEVELOPMENT; CAENORHABDITIS-ELEGANS; TRANSIENT EXPRESSION; ONTOGENIC CRITERION; PATTERN-FORMATION; VERTEBRATE SKULL; GENE-EXPRESSION; PAIRED FINS; PHYLOGENY;
Keywords:
development; craniofacial; mammal; marsupial;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
116
Recensione:
Indirizzi per estratti:
Indirizzo: Smith, KK Duke Univ, Dept Biol, Box 90338, Durham, NC 27708 USA Duke Univ Box 90338 Durham NC USA 27708 38, Durham, NC 27708 USA
Citazione:
K.K. Smith, "Heterochrony revisited: the evolution of developmental sequences", BIOL J LINN, 73(2), 2001, pp. 169-186

Abstract

The concept of heterochrony is a persistent component of discussions aboutthe way that evolution and development interact. Since the late 1970s heterochrony has been defined largely as developmental changes in the relationship of size and shape. This approach to heterochrony, here termed growth heterochrony, is limited in the way it can analyse change in the relative timing of developmental events in a number of respects. In particular, analytical techniques do not readily allow the study of changes in developmental events not characterized by size and shape parameters, or of many kinds of events in many taxa. I discuss here an alternative approach to heterochrony,termed sequence heterochrony, in which a developmental trajectory is conceptualized as a series of discrete events. Heterochrony is demonstrated whenthe sequence position of an event changes relative to other events in thatsequence. I summarize several analytical techniques that allow the investigation of sequence heterochrony in phylogenetic contexts and also quantitatively. Finally, several examples of how this approach may be used to test hypotheses on the way development evolves are summarized. (C) 2001 The Linnean Society of London.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 11:19:27