Recombination within the Cepaea nemoralis supergene is confounded by incomplete penetrance and epistasis
Recombination within the Cepaea nemoralis supergene is confounded by incomplete penetrance and epistasis
复制标题
Cepaea nemoralis超基因内的重组因不完全外显率和上位性而混淆
DOI:
10.1101/472456
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Gonzalez D
中科院分区:
文献类型:
--
作者:
Gonzalez D
Although the land snailCepaea nemoralisis one of the most thoroughly investigated colour polymorphic species, there have been few recent studies on the inheritance of the shell traits. Previously, it has been shown that the shell polymorphism is controlled by a series of nine or more loci, of which five make a single ‘supergene’ containing tightly linked colour and banding loci and more loosely linked pigmentation, spread band and punctate loci. However, one limitation of earlier work was that putative instances of recombination between loci within the supergene were not easily verified. We therefore generated a new set ofC. nemoraliscrosses that segregate for colour, banding and pigmentation, and several other unlinked shell phenotype loci. The snails were genotyped using a set of RAD-seq-derived loci that flank the supergene, and instances of recombination tested by comparing inferred supergene genotype against RAD-marker genotype. We found no evidence that suspected ‘recombinant’ individuals are recombinant between loci within the supergene. As point estimates of recombination between both colour/banding, and colour/pigmentation loci are zero, incomplete penetrance and epistasis are a better explanation for the apparent ‘recombinant’ phenotype of some snail shells. Overall, this work, therefore, shows that the architecture of the supergene may not be as previously supposed. It also provides a resource for fine mapping of the supergene and other major shell phenotype loci.
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影响因子:
1.5
作者:
H. Wolda
通讯作者:
H. Wolda
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
A. Cain
通讯作者:
A. Cain
DOI:
--
发表时间:
1968
期刊:
影响因子:
--
作者:
A. Cain;P. Sheppard;J. M. King
通讯作者:
J. M. King
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
R. Cameron;L. Cook
通讯作者:
L. Cook
影响因子:
3.3
作者:
L. M. Cook;J. M. King
通讯作者:
J. M. King