Heterosis in Cepaea
Heterosis in Cepaea
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DOI：
10.1111/j.1095-8312.2007.00710.x
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发表时间：
2007-01-01
影响因子：
1.9
通讯作者：
Cook, Laurence M.
中科院分区：
文献类型：
--
作者：
Cook, Laurence M.
对多态性蜗牛 Cepaea nemoralis 中杂合性与壳宽度的关联进行了测试。该材料由 C. B. Goodhart 从一系列配对地点收集，这些地点的个体达到了不同的成年宽度。显性表型（其中大部分是杂合子）比隐性表型具有更大的宽度和更低的方差，无论测量的是壳底色、条带还是双隐性与其余的。大部分差异是由来自动物体型最大的栖息地的样本造成的。结果与包括颜色和条带位点在内的染色体杂种优势部分的存在相一致，并且可能有助于解释多态性的持续性。 (c) 2007 年伦敦林奈学会，林奈学会生物学杂志。
A test has been made of the association of heterozygosity with shell breadth in the polymorphic snail Cepaea nemoralis. The material was collected by C. B. Goodhart from a series of paired sites at which individuals reached different adult breadths. Dominant phenotypes, in which a large fraction was heterozygous, had a greater breadth and lower variance than recessive phenotypes regardless of whether the measurement was of shell ground colour, banding or the double recessive vs. the rest. Most of the difference was contributed by samples from the habitat where animals reached the largest size. The result is consistent with existence of heterotic sections of chromosome that include the colour and banding loci, and may help to explain the persistence of the polymorphism. (c) 2007 The Linnean Society of London, Biological Journal of the Linnean Society.