Difference between revisions of "Genus"
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British cons (talk | contribs) (New page: In biology, a genus is a grouping in the Linnaean taxonomy of living things which includes one or more related species.) |
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| − | In biology, a genus is a grouping in the [[Linnaean taxonomy]] of living things which includes one or more related species. | + | In [[biology]], a genus is a grouping in the [[Linnaean taxonomy]] of living things which includes one or more related species. |
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| + | In [[topology]], a genus of a surface is the greatest number of distinct, continuous closed curves that may be drawn on it without separating the surface into distinct regions. The closed curves cannot be self-intersecting. The genus of the surface of a sphere is 0, while the genus of a donut shape is 1. | ||
| + | [[category:biology]] | ||
| + | [[category:mathematics]] | ||
Revision as of 23:29, July 13, 2007
In biology, a genus is a grouping in the Linnaean taxonomy of living things which includes one or more related species.
In topology, a genus of a surface is the greatest number of distinct, continuous closed curves that may be drawn on it without separating the surface into distinct regions. The closed curves cannot be self-intersecting. The genus of the surface of a sphere is 0, while the genus of a donut shape is 1.