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The muscles connected to the ears of a human do not develop enough to have the same mobility allowed to monkeys. Arrows show the vestigial structure called Darwin's tubercle. In the context of human evolution, vestigiality involves those traits occurring in humans that have lost all or most of their original function through evolution. Although ...
Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [1] Assessment of the vestigiality must generally rely on comparison with homologous features in related species.
This phenomenon is an automatic-response mechanism that activates even before a human becomes consciously aware that a startling, unexpected or unknown sound has been "heard". [2] That this vestigial response occurs even before becoming consciously aware of a startling noise would explain why the function of ear-perking had evolved in animals.
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
This also seems somewhat less dubious, both as a human-specific vestigiality, and the the variation seems to be less possibly accidental, but actually representing different degrees of vestigiality (which is not to place any particular continent population at any hierarchical "kickass" or "loser" place on the "evolutionary scale", not even as ...
Early embryos of various species display some ancestral features, like the tail on this human embryo. These features normally disappear in later development, but it may not happen if the animal has an atavism.
chlor-alkali industry [7]. The path of the investigation An employee of the Environmental Protection Agency (EPA) suggested that the EHO contact the Wisconsin Department of Natural Resources (DNR) for information on Vulcan Chemicals’ mercury balance sheet. Vulcan Chemical was the only chemical company to find its missing mercury.
Vestigiality, genetically determined structures or attributes that have lost some or all of their ancestral function Topics referred to by the same term This disambiguation page lists articles associated with the title Vestiges .