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Genotype, phenotype, and developmental biology of molar tooth characters.

Authors
 Jukka Jernvall  ;  Han Sung Jung 
Citation
 American Journal of Physical Anthropology, Vol.43(Suppl.) : 171-190, 2000 
Journal Title
 American Journal of Physical Anthropology 
ISSN
 0002-9483 
Issue Date
2000
MeSH
Animals ; Biological Evolution* ; Genetics, Population ; Genotype ; Humans ; Molar/anatomy & histology* ; Molar/growth & development ; Phenotype ; Primates/anatomy & histology*
Keywords
dentition ; teeth ; morphogenesis ; evolvability ; dental traits
Abstract
Primate molar shapes reflect developmental and ecological processes. Development may constrain as well as facilitate evolution of new tooth shapes, affecting how reliable dental characters are in phylogenetic studies. Much of the genetic machinery of development uses the same genes among different organs, including teeth, limbs, and feathers. Furthermore, within a tooth, the development of individual cusps repeatedly uses the same set of developmental genes, forming a "developmental module." The repeated activation of the developmental module can explain the cumulative variation in later-developing cusps. Therefore short, later-developing cusps may be evolvable but also more homoplastic. This patterning cascade mode of cusp development can be used to explain the variational properties of dental characters and character states related to cusp initiation. The developmental basis and variational properties of crown termination, cusp shape, and cusp configuration characters are currently less well understood. It is unlikely that there is a simple "gene to phenotype" map for dental characters. Rather, the whole cusp pattern is a product of a dynamic developmental program manifested in the activation of the developmental modules.
Full Text
https://onlinelibrary.wiley.com/doi/10.1002/1096-8644%282000%2943%3A31%2B%3C171%3A%3AAID-AJPA6%3E3.0.CO%3B2-3
DOI
10.1002/1096-8644(2000)43:31+<171::aid-ajpa6>3.0.co;2-3
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
Yonsei Authors
Jung, Han Sung(정한성) ORCID logo https://orcid.org/0000-0003-2795-531X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/171536
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