Hi there Sunwaiter,
Yes, we see that the White Lion is white in colour because of a mutation. And we see in the same article that -
This coloration gives white lions a distinct disadvantage in nature because they are highly visible.
A clear example of the well known fact that all mutations (being errors in the transmission of genetic information), are not advantageous.
The same article says -
White lions remain rare in the wild and only occur when two lions carrying the mutant gene are mated together
Thanks for the article entitled -
"Adaptation to Growth in the Dark by Chlamydomonas.
Chlamydomonas is a unicellular green algae capable of photosynthesis in light, but also somewhat capable of growth in the dark by using acetate as a carbon source. Graham Bell cultured several clonal lines of Chlamydomonas in the dark for several hundred generations. Some of the lines grew well in the dark, but other lines were almost unable to grow at all. The poor growth lines improved throughout the course of the experiment until by 600 generations they were well adapted to growth in the dark. This experiment showed that new, beneficial mutations are capable of quickly (in hundreds of generations) adapting an organism that almost required light for survival to growth in the complete absence of light."
Yes, yes ! But the author of that article has made a serious mistake. It's very clear that this organism benefits a great deal from having the ability to live in the dark of its environment. In fact, the title of the article clearly says this is not 'evolution' at all. Nor is it due to 'mutation'. Instead, (as the title of the article itself indicates) it's a clear case of a species ADAPTING. Not mutating. The species in question is rapidly adapting to its unusual environment. But it remains, of course, the same species. These remarkable changes to new environments happen all the time in nature. They are part of what species do all the time. There are many, many examples of marine creatures adapted to living without light, for example. Species can and do adapt in amazing ways. But, again, this adaptive ability has been known for thousands of years and has nothing to do with 'mutations' (i.e. with errors in the transmission of genetic information). It is by the laws of heredity that these populations in these environments can and do adapt to such environments.
Notice how the author still says -
'Beneficial mutations are capable of quickly (in hundreds of generations) adapting an organism that almost required light for survival to growth in the complete absence of light."
Again, this is wrong. He is confusing adaption with mutation. The ability of this algae to quickly adapt to its environment has absolutely nothing to do with mutations. This is a clear case of orderly and always beneficial adaption. In this case, adaption to an environment without light.
(By the way, algae are presented in many Darwinian textbooks as being the 'simplest' and most ancient 'ancestors' of many species. In actual fact algae are amazingly complex and are a clear example of how the very same species we see today in nature existed even at the time when the first fossils were formed. The little algae show us this clearly. Fossils of many algae are as you know found in even Cambrian and other rock formations worldwide. No 'evolution' there ! The very same algae species are alive and well today everywhere in the seas of the world. A more clear example of the permanence of species would be hard to find).
Regards