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¿Se probó la ascendencia común universal?
Takahiro Yonezawa1, Masami Hasegawa
1School of Life Sciences, Fudan University, Shanghai 200433, China.
Nature
|December 18, 2010
Resumen
El estudio probó estadísticamente la ascendencia común universal (UCA) para toda la vida, encontrando que la evidencia actual es insuficiente para descartar orígenes separados para los tres dominios de la vida.
Área de la Ciencia:
- Biología evolutiva Biología evolutiva.
- La genómica es la genómica.
- La bioinformática es la bioinformática.
Sus antecedentes:
- La teoría de la ascendencia común universal (UCA) postula que toda la vida en la Tierra comparte un único antepasado común, un concepto fundamental en la biología evolutiva desde Darwin.
- A pesar de las extensas pruebas circunstanciales, han faltado rigurosas pruebas estadísticas de UCA utilizando secuencias moleculares en los tres dominios de la vida (eubacteria, arqueobacteria y eucariotas).
- Los análisis estadísticos recientes han apoyado la ACU, pero quedan dudas sobre su suficiencia para rechazar definitivamente las hipótesis alternativas.
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