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Brown In a website poll of over 66,000 respondents, 20% said green was the most attractive, followed by hazel and light blue at 16%. Brown was far and away voted the least attractive (6%).
Without a pillow to support the head, side and back sleepers may experience stiffness or soreness in the lumbar or cervical spine. Referred neck...
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After the surgical removal of the prostate (prostatectomy) PSA drops to virtually undetectable levels (less than 0.1), depending on the lab...
Read More »Human eye color has always been fascinating and mysterious. Babies are usually born with blue eyes. Those mostly change within the first three years to other colors. Some people have different colored eyes; they were celebrated back in July with “Different Colored Eyes Day.” Some emotions can cause the eyes color to change, such as when you’re angry. Scientists still don’t know why some people’s eyes are a certain color. It is known that human eye colors originate with three genes, obviously passed down from your parents. Thing is, only two of those three genes are understood. Those two give people the common eye colors of green, blue, and brown. But scientists don’t understand why other people have gray, hazel, or eyes with multiple colors in them. Back in the 60s the common thinking was that brown eyes were “dominant” gene traits and blue eyes were “recessive,” but that’s too simplistic. Eye colors don’t turn out to be a blend of your parents’ eyes. Really, the only predictor is if the parents both have brown eyes, then the baby will likely also have brown eyes. Dark colors dominate more, so brown wins out over green, which wins out over blue. Baby eyes are interesting in themselves. Most babies are born with blue eyes and everyone watches to see if those eyes are going to another color. This darkening is due to melanin, just like in the skin. Babies don’t have melanin in their eyes at birth, but it develops with age and can make the eye color darken. Some children are born with irises that don’t match in color. This can be caused by trauma in the womb or shortly after birth, a benign genetic disorder, or a developmental issue in the transport of pigment. Although, an eye doctor should check this, there is usually nothing serious about the condition. Hence, you get Kate Bosworth with her one hazel eye and one blue eye.
Men, on the other hand, are able to produce sperm cells for their entire lives. As men age, testosterone levels go down and for some, it might be...
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Yes. An erection is not necessary for orgasm or ejaculation. Even if a man cannot have an erection or can only get or keep a partial erection, with...
Read More »Scientists concluded that every blue-eyed person on the world today can trace their ancestry back to a single European who probably lived about 10,000 years ago in the Black Sea region and who first developed a specific mutation that accounts for the now widespread iris coloration.
Humans have many phenotypic variations in eye color which is determined by multiple genes. So far, up to 16 genes have been associated with eye color inheritance. However, scientists from the Institute of Forensic Genetics at the University of Copenhagen discovered that the reason for blue eyes mainly lies in two genes: OCA2 and HERC2. This way they have shown that the earlier belief that blue eye color is a simple recessive trait is incorrect. Originally, all humans had brown eyes, although genetic variation relating to a gene called OCA2 resulted in changes to the amount of pigment produced by different individuals, resulting in the emergence of different shades of brown eyes. Scientists studying the genetics of eye color have identified that a mutation to a separate, nearby gene called HERC2 is the cause of blue eyes. This alteration switches off OCA2, the gene that determines the amount of the brown pigment melanin that we make. Today, around 20-40% of European people have blue eyes. Scientist discovered that more than 99.9 per cent of blue-eyed people who volunteered to have their DNA analyzed have the same tiny mutation in the gene that determines the color of the iris. Scientists concluded that every blue-eyed person on the world today can trace their ancestry back to a single European who probably lived about 10,000 years ago in the Black Sea region and who first developed a specific mutation that accounts for the now widespread iris coloration. Watch the video “Why Do You Have Blue Eyes?” which explains in a simple way the genetics of blue eyes. Enjoy!
A wetness indicator is a common feature in many disposable diapers and toilet training pants. It is a feature that reacts to exposure of liquid as...
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Several studies indicate a positive association between saturated fat intake from meat and dairy products and prostate cancer. Intakes of red meat...
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Symptoms when vitamin D is low Fatigue. Not sleeping well. Bone pain or achiness. Depression or feelings of sadness. Hair loss. Muscle weakness....
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Symptoms of anxiety in men pounding or racing heart. excessive sweating. muscle tension. restlessness or agitation. dizziness and vertigo....
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