INVESTIGADORES
MENSCH Julian
artículos
Título:
Speciation Genes
Autor/es:
MENSCH JULIÁN; FRANKEL NICOLÁS; HASSON ESTEBAN
Revista:
eLS Citable Reviews in the Life Sciences
Editorial:
John Wiley and Sons
Referencias:
Lugar: Londres; Año: 2013 p. 1 - 8
ISSN:
1523-8253
Resumen:
Even though there is no universal criterion for species definition, the key event in speciation research is the advent of reproductive isolation or barriers that prevent gene flow
between populations. The search for genetic factors underlying isolating
barriers is the field of speciation genetics. The development of
sophisticated methods of genetic analysis coupled with statistical
advances allowed a finer dissection of the genetic factors underlying
the origins of species down to the level of the individual loci and even
at the deoxyribonucleic acid (DNA)-sequence level. Traditionally,
speciation geneticists concentrated, almost exclusively, on genes
causing hybrid incompatibilities (especially intrinsic postzygotic
barriers). However, barriers to gene flow caused by speciation genes can
arise at multiple prezygotic and postzygotic life-history stages. Thus,
a general definition of speciation genes should refer to those genes
that contributed to the splitting of two lineages by reducing the amount of gene flow between them.