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Written by: Emel Kökrek
Date: 17.10.05

Color Vision

The researchers1 had another clue in the process of understanding evolution by examining a group of closely-related fish species which, as it is proven, might respond to their particular environments by interpreting the visual world slightly differently. The result they came up with is "using photoreceptors that are attuned to particular wavelights of light" the vision of these species is shaped by the evolution. The examined group is Cichlid fish species of the East African Rift Lakes. According to the report, it is estimated that Cichlid fish, migrating from Lake Tanganyika, have given rise to lots of new Cichlid species in the last 100,000 years that is a relatively short period of evolutionary time. The reason why these species are chosen is given in the report: "Thanks to the relatively recent colonization by these fish of different ecological niches, as well as the prominent role of nuptual coloring in the mating......

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Approximate Word Count: 510
Approximate Pages: 3 (250 words per double-spaced page)

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