11 research outputs found
Independent Mammalian Genome Contractions Following the KT Boundary
Although it is generally accepted that major changes in the earth's history are significant drivers of phylogenetic diversification and extinction, such episodes may also have long-lasting effects on genomic architecture. Here we show that widespread reductions in genome size have occurred in multiple lineages of mammals subsequent to the Cretaceous–Tertiary (KT) boundary, whereas there is no evidence for such changes in other vertebrate, invertebrate, or land plant lineages. Although the mechanisms remain unclear, such shifts in mammalian genome evolution may be a consequence of an increase in the efficiency of selection against excess DNA resulting from post-KT population size expansions. Independent historical changes in genome architecture in diverse lineages raise a significant challenge to the idea that genome size is finely tuned to achieve adaptive phenotypic modifications and suggest that attempts to use phylogenetic analysis to infer ancestral genome sizes may be problematical
Le Laé (suite)
Esnault Gaston. Le Laé (suite). In: Annales de Bretagne. Tome 27, numéro 2, 1911. pp. 264-279
Le Laé (suite)
Esnault Gaston. Le Laé (suite). In: Annales de Bretagne. Tome 27, numéro 3, 1911. pp. 449-466
Le Laé
Esnault Gaston. Le Laé . In: Annales de Bretagne. Tome 26, numéro 4, 1910. pp. 770-774
Le Laé
Esnault Gaston. Le Laé. In: Annales de Bretagne. Tome 29, numéro 3, 1913. pp. 513-546
Rasse des noeuds, Abbuz et Chant royal
Esnault Gaston. Rasse des noeuds, Abbuz et Chant royal. In: Romania, tome 83 n°331, 1962. pp. 303-322
Le jargon de Villon
Esnault Gaston. Le jargon de Villon. In: Romania, tome 72 n°287, 1951. pp. 289-309
Le Laé (suite)
Esnault Gaston. Le Laé (suite). In: Annales de Bretagne. Tome 34, numéro 3, 1919. pp. 319-362