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Selection

selection

(Science: biology) Placing organisms under conditions where the growth of those with a particular genotype will be favored.


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Neo-Orthogenesis and Neo-Darwinian evolution

Before my question I would like to state as clearly as possible that I completely accept Darwinian natural selection as an established scientific fact and a logical and beautiful explanation of the majestic evolution and diversity of life. Although not a biologist, I have read ...

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by valetudo
Tue Mar 11, 2014 11:12 am
 
Forum: Evolution
Topic: Neo-Orthogenesis and Neo-Darwinian evolution
Replies: 0
Views: 61

Re: Why do Africans have large noses and lips?

... are linked on DNA. Sometimes a trait that is helpful for survival is very closely associated with another trait on the DNA strand. So when natural selection keeps trait A in the gene pool as advantageous, trait B is also preserved. Trait B may confer no advantage, but it gets "carried along." ...

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by anneland
Sun Mar 09, 2014 6:54 pm
 
Forum: Human Biology
Topic: Why do Africans have large noses and lips?
Replies: 30
Views: 186255

Microevolution verus Macroevolution

... and in fact there is a beautiful example of extinction and speciation in a single event, namely an extinction event in a ring species. If a selection of sub-species in the middle of the ring go extinct, by a bolide impact, for example, and the remaining subspecies are no longer reproductively ...

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by hackenslash
Thu Mar 06, 2014 8:57 am
 
Forum: Evolution
Topic: Microevolution verus Macroevolution
Replies: 15
Views: 17594

Please answer: Group selection and Sociobiology

... Western culture could suppress local cultures, and it was just a natural process. The concept became politically very incorrect. Rejecting group selection means saying that, in colonial species, the interactions and subgroups within the colony are irrelevant to the continuation of the group.

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by Darby
Tue Feb 25, 2014 5:48 pm
 
Forum: Human Biology
Topic: Please answer: Group selection and Sociobiology
Replies: 1
Views: 135

Please answer: Group selection and Sociobiology

... is relevant to this thread. I'm currently into sociobiology (not studying it, just thinking of doing so) I've read on a topic called group selection but I haven't fully understood it yet. I know that group selection is the idea that genetic traits (specific genes or mutations of genes) ...

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by Veritophilia
Sun Feb 23, 2014 11:07 pm
 
Forum: Human Biology
Topic: Please answer: Group selection and Sociobiology
Replies: 1
Views: 135
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