Microcephaly genes evolved adaptively throughout the evolution of eutherian mammals
نویسندگان
چکیده
منابع مشابه
Evolution of the placenta in eutherian mammals.
We review recent advances in our understanding of placental evolution with particular focus on the interhaemal barrier. It seems likely that the non-invasive, epitheliochorial placentation of living eutherians is a derived state. However, there is disagreement on whether the last common ancestor of eutherian mammals had an endotheliochorial placenta or a haemochorial one. Research has been stim...
متن کاملOrnithorhynchus anatinus (platypus) links the evolution of immunoglobulin genes in eutherian mammals and nonmammalian tetrapods.
The evolutionary origins of mammalian immunoglobulin H chain isotypes (IgM, IgD, IgG, IgE, and IgA) are still incompletely understood as these isotypes differ considerably in structure and number from their counterparts in nonmammalian tetrapods. We report in this study that the platypus (Ornithorhynchus anatinus) Ig H chain constant region gene locus contains eight Ig encoding genes, which are...
متن کاملThe origin of eutherian mammals
Palaeontologically recognizable eutherians originated no later than the Early Cretaceous in warm, probably moderately seasonal climates. Immediate ancestors were small, sharing many anatomical, physiological and reproductive features with small modern marsupials. Development of characteristically eutherian features involved interactions of body size, rates of metabolism, energetic costs of repr...
متن کاملDivergence Times of Eutherian Mammals
In the continuing debate about the timing of the origin of major extant placental clades, both proponents of a divergence after the Cretaceous-Tertiary (K-T) boundary and those advocating divergence deep within the Cretaceous too often miss what the Late Cretaceous record of placentals actually shows. For example, Foote et al. (1) are correct that many Late Cretaceous reports of extant ordinal ...
متن کاملDivergence Times of Eutherian Mammals
In the continuing debate about the timing of the origin of major extant placental clades, both proponents of a divergence after the Cretaceous-Tertiary (K-T) boundary and those advocating divergence deep within the Cretaceous too often miss what the Late Cretaceous record of placentals actually shows. For example, Foote et al. (1) are correct that many Late Cretaceous reports of extant ordinal ...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2014
ISSN: 1471-2148
DOI: 10.1186/1471-2148-14-120