Testing the Cambrian explosion hypothesis by using a molecular dating technique
Testing the Cambrian explosion hypothesis by using a molecular dating technique
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DOI：
10.1073/pnas.95.21.12386
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发表时间：
1998-10-13
影响因子：
11.1
通讯作者：
Penny, D
中科院分区：
文献类型：
--
作者：
Bromham, L;Rambaut, A;Penny, D
分子生物学研究有可能通过提供对分歧时间的独立估计来阐明动物门的起源，但因未能充分解释进化速度的变化而受到批评。一种从分子数据确定分歧时间的方法解决了早期研究的批评，并提供了更现实，但更广泛的置信区间。这些数据是不兼容的寒武纪爆炸假说作为一个解释的起源后生动物门，并提供额外的支持，延长前寒武纪后生动物多样化。
Molecular studies have the potential to shed light on the origin of the animal phyla by providing independent estimates of the divergence times, but have been criticized for failing to account adequately for variation in rate of evolution. A method of dating divergence times from molecular data addresses the criticisms of earlier studies and provides more realistic, but wider, confidence intervals. The data are not compatible with the Cambrian explosion hypothesis as an explanation for the origin of metazoan phyla, and provide additional support for an extended period of Precambrian metazoan diversification.