Genetic architecture supports mosaic brain evolution and independent brain-body size regulation.
Genetic architecture supports mosaic brain evolution and independent brain-body size regulation.
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DOI:
10.1038/ncomms2086
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发表时间:
2012
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
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The mammalian brain consists of distinct parts that fulfil different functions. Finlay and Darlington have argued that evolution of the mammalian brain is constrained by developmental programs, suggesting that different brain parts are not free to respond individually to selection and evolve independent of other parts or overall brain size. However, comparisons among mammals with matched brain weights often reveal greater differences in brain part size, arguing against strong developmental constraints. Here, we test these hypotheses using a quantitative genetic approach involving over 10,000 mice. We identify independent loci for size variation in seven key parts of the brain, and observe that brain parts show low or no phenotypic correlation, as is predicted by a mosaic scenario. We also demonstrate that variation in brain size is independently regulated from body size. The allometric relations seen at higher phylogenetic levels are thus unlikely to be the product of strong developmental constraints.
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影响因子:
9.8
作者:
Shifman S;Bell JT;Copley RR;Taylor MS;Williams RW;Mott R;Flint J
通讯作者:
Flint J
DOI:
10.1098/rspb.1979.0086
发表时间:
1979-01-01
期刊:
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子:
--
作者:
GOULD, SJ;LEWONTIN, RC
通讯作者:
LEWONTIN, RC
影响因子:
5.4
作者:
Montgomery SH;Capellini I;Barton RA;Mundy NI
通讯作者:
Mundy NI
影响因子:
30.8
作者:
Chesler, EJ;Lu, L;Williams, RW
通讯作者:
Williams, RW
影响因子:
56.9
作者:
FINLAY, BL;DARLINGTON, RB
通讯作者:
DARLINGTON, RB