The genetic basis of a complex functional system.
The genetic basis of a complex functional system.
复制标题
复杂功能系统的遗传基础。
DOI:
10.1111/j.1558-5646.2012.01688.x
复制
发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Streelman,JTodd
中科院分区:
文献类型:
--
作者:
Parnell,NicholasF;Hulsey,CDarrin;Streelman,JTodd
The relationship between form and function can have profound effects on evolutionary dynamics and such effects may differ for simple versus complex systems. In particular, functions produced by multiple structural configurations (many-to-one mapping, MTOM) may dampen constituent trade-offs and promote diversification. Unfortunately, we lack information about the genetic architecture of MTOM functional systems. The skulls of teleost fishes contain both simple (lower jaw levers) as well as more complex (jaws modeled as 4-bar linkages) functional systems within the same craniofacial unit. We examined the mapping of form to function and the genetic basis of these systems by identifying quantitative trait loci (QTL) in hybrids of two Lake Malawi cichlid species. Hybrid individuals exhibited novelty (transgressive segregation) in morphological components and function of the simple and complex jaw systems. Functional novelty was proportional to the prevalence of extreme morphologies in the simple levers; by contrast, recombination of parental morphologies produced transgression in the MTOM 4-bar linkage. We found multiple loci of moderate effect and epistasis controlling jaw phenotypes in both the simple and complex systems, with less phenotypic variance explained by QTL for the 4-bar. Genetic linkage between components of the simple and complex systems partly explains phenotypic correlations and may constrain functional evolution.
登录
查看更多内容
影响因子:
5.4
作者:
PAGE, TH;LALI, FV;FOXWELL, BMJ
通讯作者:
FOXWELL, BMJ
影响因子:
56.9
作者:
RUSSELL, SM;JOHNSTON, JA;LEONARD, WJ
通讯作者:
LEONARD, WJ
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Goldsmith,MA;Xu,W;Amaral,MC;Kuczek,ES;Greene,WC
通讯作者:
Greene,WC
DOI:
10.1073/pnas.86.5.1634
发表时间:
1989
影响因子:
11.1
作者:
S. Takeda;S. Gillis;R. Palacios
通讯作者:
R. Palacios
影响因子:
11.4
作者:
S. Y. Lai;J. Molden;Kathleen D. Liu;Jennifer M. Puck;Morris D. White;Mark A. Goldsmith
通讯作者:
Mark A. Goldsmith