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Biological Indicator

Biological indicators are species which can be used by observers to determine how various conditions in an environment have changed over time. The peppered moth is a good indicator of species, because its wings change colour depending on how polluted the area is, white moths having lighter wings. This is an evolutionary adaptation called industrial Melanism.


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A question about sexual selection!

... principle states that some males have genes that indicate that they are biologically fit. Some females already have (or develop one through a mutation) a gene that allows her to discriminate the male's phenotypic 'health' indicator, as well as a gene that gives her a preference for this trait in ...

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by AlexB1001
Fri Oct 29, 2010 12:46 pm
 
Forum: Zoology Discussion
Topic: A question about sexual selection!
Replies: 4
Views: 7237

Re: Doubling time for cells

... we get from the cell doubling time t..is it telling us a measurement/or indicator ?...say: t measure a successful of radiation treatment? .i am not in biological area, i am a mathematics student. So can anyone here could explain to me please.....

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by Adah
Mon Jul 05, 2010 10:31 am
 
Forum: Cell Biology
Topic: Doubling time for cells
Replies: 9
Views: 42080

Re: 5 best proofs of evolution

... In general, we find "specified complexity" to be a reliable indicator of the presence of intelligent design. Chance can explain complexity ... one example of the specified complexity that pervades the microscopic biological world. Molecular biologist Michael Denton wrote, "Although ...

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by robsabba
Tue Nov 03, 2009 5:12 pm
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 240552

Re: 5 best proofs of evolution

... In general, we find "specified complexity" to be a reliable indicator of the presence of intelligent design. Chance can explain complexity ... one example of the specified complexity that pervades the microscopic biological world. Molecular biologist Michael Denton wrote, "Although ...

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by dingo
Tue Nov 03, 2009 6:09 am
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 240552

Born gay?

... people on a completely different sexual drive, but it could also be an indicator of a biological component. Personally I don't have a problem with straight people, I mean I have ...

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by Vibrancy
Tue Jun 26, 2007 6:55 pm
 
Forum: Human Biology
Topic: Born gay?
Replies: 75
Views: 46188
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