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- Q259880 subject Q15909988.
- Q259880 subject Q4925926.
- Q259880 subject Q7329527.
- Q259880 abstract "In biology, outbreeding depression occurs when offspring from crosses between individuals from different populations have lower fitness than progeny from crosses between individuals from the same population. The concept is opposed to inbreeding depression. This phenomenon can occur in two ways. First, intermediate genotypes may be disfavored. For example, selection in one population might produce a large body size, whereas in another population small body size might be more advantageous. Gene flow between these populations may lead to individuals with intermediate body sizes, which may not be adaptive in either population. It might be that, in a certain environment, having either a large or a small body is advantageous, whereas an intermediate-sized body is comparatively disadvantageous. A second cause of outbreeding depression may be the breakdown of biochemical or physiological compatibilities between genes in the different breeding populations. Within local, isolated breeding populations, alleles are selected for their positive, overall effects on the local genetic background. Due to nonadditive gene action, the same genes may have rather different average effects in different genetic backgrounds-- hence, the potential evolution of locally coadapted gene complexes. On the other hand, according to the overdominance hypothesis in genetics, it is believed that certain combinations of alleles (which can only be obtained by outbreeding) are especially advantageous when paired in a heterozygous individual, which is one explanation for the existence of hybrid vigor.A third, but neutral, effect of outbreeding is the loss of allopatric speciation of a particular group, that lends its distinctness and contributes to the diversity of said types in either group by the exclusive retention of select traits.".
- Q259880 wikiPageExternalLink lynch.html.
- Q259880 wikiPageWikiLink Q104053.
- Q259880 wikiPageWikiLink Q1481109.
- Q259880 wikiPageWikiLink Q1570701.
- Q259880 wikiPageWikiLink Q15909988.
- Q259880 wikiPageWikiLink Q1782625.
- Q259880 wikiPageWikiLink Q2090033.
- Q259880 wikiPageWikiLink Q224180.
- Q259880 wikiPageWikiLink Q2293576.
- Q259880 wikiPageWikiLink Q239526.
- Q259880 wikiPageWikiLink Q2873354.
- Q259880 wikiPageWikiLink Q339051.
- Q259880 wikiPageWikiLink Q3749492.
- Q259880 wikiPageWikiLink Q41692.
- Q259880 wikiPageWikiLink Q420.
- Q259880 wikiPageWikiLink Q42621.
- Q259880 wikiPageWikiLink Q4820608.
- Q259880 wikiPageWikiLink Q4925926.
- Q259880 wikiPageWikiLink Q7329527.
- Q259880 wikiPageWikiLink Q751748.
- Q259880 wikiPageWikiLink Q7643391.
- Q259880 wikiPageWikiLink Q779009.
- Q259880 wikiPageWikiLink Q80726.
- Q259880 wikiPageWikiLink Q853848.
- Q259880 comment "In biology, outbreeding depression occurs when offspring from crosses between individuals from different populations have lower fitness than progeny from crosses between individuals from the same population. The concept is opposed to inbreeding depression. This phenomenon can occur in two ways. First, intermediate genotypes may be disfavored. For example, selection in one population might produce a large body size, whereas in another population small body size might be more advantageous.".
- Q259880 label "Outbreeding depression".