Role of gene interactions in hybrid speciation: Evidence from ancient and experimental hybrids
Role of gene interactions in hybrid speciation: Evidence from ancient and experimental hybrids
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DOI：
10.1126/science.272.5262.741
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发表时间：
1996-05-03
期刊：
影响因子：
56.9
通讯作者：
Arias, DM
中科院分区：
文献类型：
--
作者：
Rieseberg, LH;Sinervo, B;Arias, DM
通过杂交产生一个新的二倍体物种需要成功地合并已分化的亲本物种的基因组。为了研究这一过程，将三个实验合成的杂交谱系的基因组组成与一个古老的杂交物种进行了比较。人工合成的和古老的杂种的基因组组成是一致的（r（s）= 0.68，P < 0.0001），表明选择在很大程度上控制杂种物种的形成。此外，非随机率的渐渗和显着的关联在每三个合成的杂交谱系中的非连锁标记之间的相互作用意味着coadapted亲本物种的基因之间的相互作用约束杂交种的基因组组成。
The origin of a new diploid species by means of hybridization requires the successful merger of differentiated parental species' genomes. To study this process, the genomic composition of three experimentally synthesized hybrid lineages was compared with that of an ancient hybrid species. The genomic composition of the synthesized and ancient hybrids was concordant (r(s) = 0.68, P < 0.0001), indicating that selection to a large extent governs hybrid species formation. Further, nonrandom rates of introgression and significant associations among unlinked markers in each of the three synthesized hybrid lineages imply that interactions between coadapted parental species' genes constrain the genomic composition of hybrid species.