Synonymer & Information om | Engelska ordet NEOTENY

Exempel på hur man kan använda NEOTENY i en mening

• Both neoteny and progenesis result in paedomorphism (as having the form typical of children) or paedomorphosis (changing towards forms typical of children), a type of heterochrony.
• Atavisms can occur in several ways, A number of traits can vary as a result of shortening of the fetal development of a trait (neoteny) or by prolongation of the same.
• This is called progenesis, in which sexual development occurs faster than other physiological development (in contrast, the term neoteny refers to when non-sexual development is slowed – but the result is the same - the retention of juvenile characteristics into adulthood).
• It exhibits neoteny, retaining larval characteristics like external gills into adulthood, like some American amphibians, the axolotl and the mudpuppies (Necturus).
• The second half of the book details how modern concepts such as heterochrony (changes in developmental timing) and neoteny (the retardation of developmental expression or growth rates) influence macroevolution (major evolutionary transitions).
• Garstang made the radical suggestion that the chordates evolved from the larvae of another group, whether the larvae of hemichordates or of echinoderms, by progenesis (which Garstang called "neoteny").
• He tracked across plant phylogenies the common shifting of different plant tissues and organs, such as increases in the meristele number, pinnation of fern leaves, and the occurrence of plant neoteny.
• Since then, heterotopy has been studied less than its companion, heterochrony which results in more readily observable phenomena like neoteny.
• However, humans also have relatively large noses and long legs, both peramorphic (not neotenic) traits, though these peramorphic traits separating modern humans from extant chimpanzees were present in Homo erectus to an even higher degree than in Homo sapiens, which means general neoteny is valid for the H.

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