Adaptive evolution of ASPM, a major determinant of cerebral cortical size in humans
نویسندگان
چکیده
منابع مشابه
Adaptive evolution of ASPM, a major determinant of cerebral cortical size in humans.
A prominent trend in the evolution of humans is the progressive enlargement of the cerebral cortex. The ASPM (Abnormal spindle-like microcephaly associated) gene has the potential to play a role in this evolutionary process, because mutations in this gene cause severe reductions in the cerebral cortical size of affected humans. Here, we show that the evolution of ASPM is significantly accelerat...
متن کاملEvolution of the human ASPM gene, a major determinant of brain size.
The size of human brain tripled over a period of approximately 2 million years (MY) that ended 0.2-0.4 MY ago. This evolutionary expansion is believed to be important to the emergence of human language and other high-order cognitive functions, yet its genetic basis remains unknown. An evolutionary analysis of genes controlling brain development may shed light on it. ASPM (abnormal spindle-like ...
متن کاملComment on "Ongoing adaptive evolution of ASPM, a brain size determinant in Homo sapiens".
Mekel-Bobrov et al. (Reports, 9 September 2005, p. 1720) suggested that ASPM, a gene associated with microcephaly, underwent natural selection within the last 500 to 14,100 years. Their analyses based on comparison with computer simulations indicated that ASPM had an unusual pattern of variation. However, when we compare ASPM empirically to a large number of other loci, its variation is not unu...
متن کاملOngoing adaptive evolution of ASPM, a brain size determinant in Homo sapiens.
The gene ASPM (abnormal spindle-like microcephaly associated) is a specific regulator of brain size, and its evolution in the lineage leading to Homo sapiens was driven by strong positive selection. Here, we show that one genetic variant of ASPM in humans arose merely about 5800 years ago and has since swept to high frequency under strong positive selection. These findings, especially the remar...
متن کاملASPM and the Evolution of Cerebral Cortical Size in a Community of New World Monkeys
The ASPM (abnormal spindle-like microcephaly associated) gene has been proposed as a major determinant of cerebral cortical size among primates, including humans. Yet the specific functions of ASPM and its connection to human intelligence remain controversial. This debate is limited in part by a taxonomic focus on Old World monkeys and apes. Here we expand the comparative context of ASPM sequen...
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ژورنال
عنوان ژورنال: Human Molecular Genetics
سال: 2004
ISSN: 1460-2083,0964-6906
DOI: 10.1093/hmg/ddh055