I know a lot of people have come in to explain this is how it works and i have explained this is not how it works, and this the latter is in accordance with the theory, which implicates that through the mechanisms we have discussed and natural selection, that an evolved specie, something new with new information is evolved and this is how human origins is explained. How in the hell then can two types of moths, living already and present, be evolving, when as a result of the enviroment and predators, that one of them became less in ratio, and one higher in ratio, how is this evolution, you call alleles, well, two specie already existing, one goes less in number, due to it being more visible now to birds and easy prey. how has either specie got new info in its dna, how in both specie did a new ogan grow, how or which of the two is a totally new specie as a result. non.
read the article industrial melanism, and you will see the flaws in it and how scandelous it really is. jus coz i have been away does not mean i gave up, its grand slam sunday and Gooners sit top of the table. You will understand where i have been now.
read the article industrial melanism, and you will see the flaws in it and how scandelous it really is. jus coz i have been away does not mean i gave up, its grand slam sunday and Gooners sit top of the table. You will understand where i have been now.
This is a form of speciation in action! Whats the problem?
One of the best documented examples of natural selection in modern times is the English Peppered Moth. Typically, this moth is whitish with black speckles and spots all over its wings. During the daytime, Peppered moths are well-camouflaged as they rest on the speckled lichens on tree trunks. Occasionally a very few moths have a genetic mutation which causes them to be all black, so they are said to be melanistic. Black moths resting on light-colored, speckled lichens are not very well camouflaged, and so are easy prey for any moth-eating birds that happen by. Thus, these melanistic moths never get to reproduce and pass on their genes for black color. However, an interesting thing happened to these moths in the 1800s. With the Industrial Revolution, many factories and homes in British cities started burning coal, both for heat and to power all those newly-invented machines. Coal does not burn cleanly, and creates a lot of black soot and pollution. Since lichens are extremely sensitive to air pollution, this caused all the lichens on city trees to die. Also, as the soot settled out everywhere, this turned the tree trunks (and everything else) black. This enabled the occasional black moths to be well-camouflaged so they could live long enough to reproduce, while the “normal” speckled moths were gobbled up. Studies done in the earlier 1900s showed that while in the country, the speckled moths were still the predominant form, in the cities, they were almost non-existant. Nearly all the moths in the cities were the black form. It was evident to the researchers studying these moths that the black city moths were breeding primarily with other black city moths while speckled country moths were breeding primarily with other speckled country moths. Because of this, any new genetic mutations in one or the other of those populations would only be passed on within that population and not throughout the whole moth population. Additionally, because the city and country environments were different, there were different selective pressures on city vs. country moths that could potentially drive the evolution of these two populations of moths in different directions. The researchers pointed out that if this were to continue for a long enough time, the city and country moths could become so genetically different that they could no longer interbreed with each other, and thus would be considered distinct species.
Link- Natural Selection and Speciation
