排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Published gene frequency data, checked for consistency of allele definitions across laboratories and for comparability of
geographically identical samples, were pooled into a data set containing frequencies at nine loci for each of 20 populations
that encompassed 10 macaque species. Genetic distances were calculated by the methods of Kidd and Cavalli-Sforza (1974). These
distances were used to construct phylogenetic trees and to evaluate the relationships between divergence times and effective
population sizes. Inter-and intraspecific genetic distances and the groupings defined by phenetic tree analyses support Fooden’s
(1976) classification of the genus Macacainto four species groups. A paleozoogeographical model of Asia including the known times of major sea-level changes allows
us to explain Macacainto four species groups. A paleozoogeographical model of Asia including the known times of major sea-level changes allows
us to explain qualitatively the inferred evolutionary relationships among macaque species. Many assumptions are required in
order to estimate the variables necessary in the quantitative prediction of genetic differences for a comparison between any
two populations. Examination of those assumptions demonstrates the need for more accurate genetic as well as paleozoogeographic
information.
An erratum to this article is available at . 相似文献
2.
滇西保山地区石炭纪、二叠纪古动物地理演化 总被引:14,自引:0,他引:14
探讨滇西保山地块晚古生代Ting类、有孔虫、珊瑚、牙形刺、腕足类等动物群的古生物地理属性,根据牙形刺和Ting类化石,确定长期争论的丁家寨组的时代为Artinskian期,小型单体珊瑚Cyathaxonia动物群可出现在从早石炭世到二叠纪的多种沉积环境中,不一定指示冷水冈瓦纳型。根据沉积特征及对环境特别敏感的珊瑚和Ting类动物群的分布特点,结合全球构造事件,恢复保山地块的古地理演化模式。早石炭世 相似文献
1