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Дебатирај здраворазумски, штом не веруваш, но не и со исклучиви предрасуди за наводната еволуција. Најголем дел до мојот живот го поминав во неверие и во марксистичко-дарвинов занес и затоа многу добро ми е позната таа состојба, кога живееш само со една наметната вистина.
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Еве линк:
http://www.pravoslavna-srbija.com/Pravoslavlje/Bog%20i%20nauka/Poreklo%20rasa/Poreklo%20rasa.htm
А еве уште еден:
http://www.pravoslavna-srbija.com/Pravoslavlje/Bog i nauka/Mutacije/Mutacije.htm
Делеција на Хромозоми е сосема друга работа
има само една делеција (редукција на бројот на хромозоми-ако воопшто знаеш што е тоа) која е споива со живот.
Српските попови сакаат да знааат зошто белците може да поцрнат брзо а црнците неможат да побелат ако одат на север?
http://en.wikipedia.org/wiki/Turner_syndrome
Genetics of skin color variation
See also: Human genetic variation, Race and genetics, and Human genetic clustering
Several genes have been invoked to explain variations of skin tones in humans, including SLC45A2,[8] ASIP, TYR, and OCA2.[9] SLC24A5 has been shown to account for a substantial fraction of the difference in melanin units between Europeans and Africans, variations in human skin tones have been correlated with mutations in another gene; the MC1R gene.[10] Harding found no differences among Africans for the amino acid sequences in their receptor proteins while among certain European non-African individuals there were.
Examination of the variation in MC1R nucleotide sequences for people of different ancestry to determine the most probable progression of the skin tone of human ancestors over the last five million years and comparing the MC1R nucleotide sequences for chimpanzees and humans in various regions of the Earth, Rogers concluded that the common ancestors of all humans had light skin tone under dark hair. By 1.2 million years ago, all people having descendants today had exactly the receptor protein of today's Africans; their skin was dark, and the intense sun killed off the progeny with any lighter skin that resulted from mutational variation in the receptor protein.[11]
However, the progeny of those humans who migrated North away from the intense African sun had another evolutionary constraint: vitamin D availability. Human requirements for vitamin D (cholecalciferol) are in part met through photoconversion of a precursor to vitamin D3. As humans migrated north from the equator, they were exposed to less intense sunlight, in part because of the need for greater use of clothing to protect against the colder climate, under these conditions, evolutionary pressures would tend to select for lighter-skinned humans as there was less photodestruction of folate and a greater need for photogeneration of cholecalciferol.[2] Hence the leading hypothesis for the evolution of human skin color proposes that:-
From ~1.2 million years ago for at least ~1.35 million years, the ancestors of all people alive were as dark as today's Africans.
The descendants of any prehistoric people who migrated North from the equator mutated to become light over time because the evolutionary constraint keeping Africans' skin dark decreased generally the further North a people migrated.[11][12] This also occurs as a result of selection for light skin due to the need to produce vitamin D by way of the penetration of sunlight into the skin (the exception being if dietary sources of vitamin D are available, as is the case among the Inuit).
The genetic mutations leading to light skin, though different among East Asians and Europeans,[13] suggest the two groups experienced a similar selective pressure due to settlement in northern latitudes.[3]
A variation of the vitamin D argument is that humans lived in Europe for several thousand years without their skin lightening and that it only became white after they adopted agriculture.[3][14] It is suggested that in Europe the latitude permitted enough synthesis of vitamin D combined with hunting for health, only when agriculture was adopted was there a need for lighter skin to maximize the synthesis of vitamin D , therefore it is suggested the elimination of game meat, fish, and some plants from the diet resulted in skin turning white several thousand years after modern human settlement in Europe.[15][16]
[edit]Health related effects
Dark skin with large concentrations of melanin protects against exposure to ultraviolet light and skin cancers; light-skinned persons have about a tenfold greater risk of dying from skin cancer, compared with dark-skinned persons, under equal sunlight exposure. Furthermore, UV-A rays from sunlight are believed to interact with folic acid in ways which may damage health.[17] In a wide range of traditional societies the sun was avoided as far as possible, especially around noon when the ultraviolet radiation in sunlight is at its most intense. Midday was a time when people stayed in the shade and had the main meal followed by a nap.[18] While dark skin offers superior protection from intense ultraviolet light, it may be the cause of low Vitamin D levels in African Americans and has led to concern that darker skinned people, such as African Americans, living at relatively high latitude may be having inadequate vitamin D levels because of their relatively greater pigmentation.[19][20] Research shows that dark-skinned people living in Western societies have lower vitamin D levels.[21][22] The explanation for low vitamin D levels in dark-skinned people is thought to be that melanin in the skin hinders vitamin D synthesis,[23] however recent studies have found novel evidence that low vitamin D levels among people of African ancestry may be due to other reasons,[24] that black women have an increase in serum parathyroid hormone - implicated in adverse cardiovascular outcomes - at a lower vitamin D level than white women,[25] and in a large scale association study of the genetic determinants of vitamin D insufficiency in Caucasians no links to pigmentation were found.[26][27]
http://en.wikipedia.org/wiki/Human_skin_color