Tortugas marinas: seres ancestrales, sus misterios, adaptaciones y amenazas
Palabras clave:
tortugas marinas, genes HOX, protección tortugasResumen
Dentro del reino animal, las tortugas pertenecen al grupo de los reptiles; aparecieron en el mundo hace 200 millones de años, antes que los grandes reptiles dominaran el planeta (Márquez, 1990). Estudios recientes en biología molecular sugieren que alteraciones en algunos genes que controlan el desarrollo de las células óseas pudo permitir la formación del caparazón (Spotila, 2004). Se sabe que un grupo de genes, llamados HOX, controla las principales vías de desarrollo en un embrión (Lappin et al., 2006). Un cambio en la función de estos genes pudo haber causado la formación del caparazón y del plastrón, características que definen a las tortugas (Spotila, 2004).
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