Human hair color

The first gray hair: what to do? Gray hair - known sign of aging. However, the first gray hairs may appear quite early, even before the onset of wrinkles. Bad mood, uncertainty, apathy - all this may be accompanied by the first gray hair. Whether to immediately record yourself in the old woman, if you can effectively deal with the situation? Causes of gray hair can be very different: age, genetics, chemical changes, or environmental impact. The problem is that the natural way to increase the amount

Skin color is a real life example of evolution in humans.In both the Skin Deep and the TED talk, they discuss and take a deeper look into the differences in skin color. In both the article and the video they hypothesized that our skin has developed over time to be dark enough to prevent the damaging sunlight that has been harming our skin and the nutrient folate that it carries. However, at the same time out skin is light enough to receive vitamin D. Scientists have studied this topic extensively

role in human evolution. In this paper I will discuss the importance of melanin in its role in the human biological system and how it relates to the natural selection of suitable human life according to geography and environment. Human pigmentation is influenced by hemoglobins within blood vessels in the skin, carotene and melanins. Melanin, the basis of pigmentation, can be found in the forms of eumelanin and phaeomelanin. Eumelanin is the brown-black pigment located in the skin, hair, and eyes

Useful Tips To Choose The Right Hair Extensions Over the years, hair extensions have become immensely popular as they offer an ideal way for adding length, volume and highlights to your hair. Moreover, there are hair extensions that come with different textures and colors. Besides, these extensions have the capacity of altering your looks dramatically. However, while you can buy hair extensions online, choosing the right one can be a daunting task, considering the fact that there are a number of

differences in skin color. Our skin color has developed over the years to be dark enough to prevent the damaging sunlight that has been harming our skin and the nutrient folate that it carries. At the same time out skin is light enough to receive vitamin D. Anthropologists and geographers have studied and overtime come to the conclusion that distribution of skin color is not random. Darker skin color has been found to typically come from near the equator and lighter skin colors are typically coming

Sciencedaily.com. “ Natural selection has altered the appearance of Europeans over the past 5,000 years” discusses how scientists have finally discovered how natural selection played a role on the human genome in the past 5,000 years and how it caused transformations in the appearances of people, in their skin, eye and hair pigmentation. This research had been on going for a long time and unfortunately; the methods the geneticists originally used did not produce good results. Finally the researchers were able

the results can be interesting from extinction to significant changes within a species. Human beings are no exception to biological evolution. Like other organisms around the world, humans have significantly changed overtime and have developed all sorts of diverse characteristics. One noticeable characteristic of human beings is the variation of skin

demonstrating the cultural basis of race by comparing how races are defined in the United States and Brazil. Anthropologists argue that race does not exist because it is not a biological entity. The cornerstone of this basis is Fish’s illustration that humans are a species; therefore we cannot be genetically different. This means that people from anywhere on earth can mate and produce fertile offspring. Using mitochondria we are able to trace the migration of mankind by using genetic markers. This is based

If everyone is perfect, then won’t perfect lose its meaning? Or would perfect only be for the wealthy? Scientists are now taking eggs from women and are changing the genes so they can decide what hair color, eye color, and skin color they want their child to have. They may also do it if their genes have a genetic disease like, higher risk of heart attacks or strokes, autism, cancer and much more. But at what risk? Overpopulation, dominating groups, decided futures, preventing the less fortunate or

your hair cool this summer. Here are a few tips to help you embrace wearing your wig in the summer time, and enjoy a cool head while you are at it! #1 Change Your Hairstyle Many people change up their hair during the summer in order to stay cool; these changes can involve a new haircut or even a new hair color. As someone who wears a wig, you are in a unique position to change your hair without having to go through a grow out phase in the fall when you want to transition to a different hair style