Desert
发表于 2025-3-28 16:59:36
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dura-mater
发表于 2025-3-28 20:20:24
The Evolution of Clonal Diversity in Poeciliopsis,genetic studies have reported abundant clonal diversity in a number of asexually reproducing organisms . What then is the source of this clonal diversity and how might it contribute to the ecological and evolutio
按时间顺序
发表于 2025-3-28 23:18:48
Descriptive Genetics of Cichlid Fishes,new species arise? While substantial insights have been made in the areas of functional anatomy and ecology by Barel .. (1977), Greenwood (1981), Liem (1980), McKaye (1980), and their coworkers, the basic questions of trophic divergence and speciation have remained controversial (Sage and Selander,
calorie
发表于 2025-3-29 06:45:15
Tetraploidy and the Evolution of Salmonid Fishes,ently been recognized as a potentially important process in the evolution of vertebrates (Ohno, 1974; Fisher ..,1980; Bogart, 1980; Schultz, 1980). Mammals and birds generally possess more DNA per cell than do fish and other chordates. This observation and the existence of many duplicated gene loci
EVICT
发表于 2025-3-29 09:45:59
Tetraploidy and the Evolution of the Catostomid Fishes,tate of flux owing to polyploidization some 50 million years ago. The time of origin of these fish is advantageous in understanding the overall picture of genome evolution in eukaryotes. Catostomids, or the suckers, are not so recent in origin that duplicate genes are identical in structure and regu
新手
发表于 2025-3-29 12:47:12
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平静生活
发表于 2025-3-29 17:32:22
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原告
发表于 2025-3-29 22:17:39
The Evolutionary Genetics of Xiphophorus,upy a variety of habitats, ranging widely through the Atlantic drainage from northeastern Mexico, south-east through Guatemala, Honduras and Belize. Like most other members of the family Poeciliidae, . species are internally fertilizing and ovoviviparous (Rosen and Bailey, 1963). Females can store s
interrupt
发表于 2025-3-30 02:47:31
Apomictic Reproduction in the Amazon Molly, Poecilia formosa, and Its Triploid Hybrids, intermediate in form between two sexual species, . (LeSueur) and . Steindachner and is thought to have arisen in nature as a hybrid of these species (Hubbs and Hubbs, 1932; Hubbs, 1955, 1964; Abramoff .., 1968; Prehn and Rasch, 1969; Balsano .., 1972). . is not a true thelytokous parthenogen as def
laparoscopy
发表于 2025-3-30 04:22:52
Evolutionary Ecology of Unisexual Fishes,irst, they reproduce, in effect, asexually, and second, their genomic constitutions are invariably identical to those of F. hybrids. Thus, a major difficulty in analyzing the evolutionary ecology of these species is to determine the extent to which the distinct phenomena of asexuality and hybridity