Largest-scale trends in evolution
The history of life on Earth seems to show a clear trend; for example, it seems intuitive that there is a trend towards increasing complexity in living organisms. More recently evolved organisms, such as mammals, appear to be much more complex than organisms, such as bacteria, which have existed for a much longer period of time. However, there are theoretical and empirical problems with this claim. From a theoretical perspective, it appears that there is no reason to expect evolution to result in any largest-scale trends, although small-scale trends, limited in time and space, are expected (Gould, 1997). From an empirical perspective, it is difficult to measure complexity and, when it has been measured, the evidence does not support a largest-scale trend (McShea, 1996).
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Largest-scale trends in evolution
The history of life on Earth seems to show a clear trend; for example, it seems intuitive that there is a trend towards increasing complexity in living organisms. More recently evolved organisms, such as mammals, appear to be much more complex than organisms, such as bacteria, which have existed for a much longer period of time. However, there are theoretical and empirical problems with this claim. From a theoretical perspective, it appears that there is no reason to expect evolution to result in any largest-scale trends, although small-scale trends, limited in time and space, are expected (Gould, 1997). From an empirical perspective, it is difficult to measure complexity and, when it has been measured, the evidence does not support a largest-scale trend (McShea, 1996).
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The history of life on Earth s ...... st-scale trend (McShea, 1996).
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الاتجاهات واسعة النطاق في التط ...... لا تدعم وجود توجه واسع النطاق.
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The history of life on Earth s ...... st-scale trend (McShea, 1996).
@en
الاتجاهات واسعة النطاق في التط ...... لا تدعم وجود توجه واسع النطاق.
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Largest-scale trends in evolution
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اتجاهات واسعة النطاق في التطور
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