- evolution concepts
- genes
- genotype
- phenotype
- gene survival
- optimizing performance
- convergence
- encoding useful knowledge
- emergent characteristics
- behaviors relative to others behavior
- parasites
- predatory behavior
- altruistic behavior
- infantcide
- sexual selection
- Gould ch. 10 Retardation and neoteny in human evolution
- neoteny
- parallels in both morphology and behavior noted by many in early 1830s
- neoteny and fetalization
- Gould seeks to save Bolk's observations and fix his errors
- there is "no room for mosaic evolution in Bolk."
- we must seek the adaptive significance of retarded development. 364"
- primates are retarded in development relative to other mammals
- humans "should" require 21 months gestation!
- thus we see two separate forces:
- comparisons with other species
- a-most mammals brain formed at birth
- b-macaques are at 65% of final cranial capacity
- c-chimps at 40%
- d-fossil australopithecus at from 37% to 25%
- e-humans at 23% of final cranial capacity.
- Glossary of terms
- 1heterochrony1 ("different timing")
- a. retardation of features
- 1. paedomorphosis2 ("child form")
- 2. recapitulation3
- b. acceleration of features
- 1. paedomorphosis
- 2. recapitulation
- life-history strategies
- a. K-selection
- b. r-selection
- neoteny
- ontogeny
- phylogeny
- allometry
- convergence or analogy
- homology
- parallel evolution
- brachycephaly
- mosaic evolution
- synergy
- preadaptation (exaption)
- genetic bottleneck
- founder effects
- References