Q.
Answer
http://en.wikipedia.org/wiki/Red_hair
red hair (also referred to as titian or ginger hair) varies from a deep burgundy through burnt orange to bright copper. It is characterized by high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin. Approximately 1% to 2% of the human population has red hair. It occurs more frequently (between 2% and 6% of the population) in northern and western Europeans, and their descendants, and at lower frequencies throughout other parts of the world. Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein. It is associated with fair skin color, lighter eye colors (gray, blue, green, and hazel), freckles, and sensitivity to ultraviolet light.
ORIGINS
Red hair is the rarest natural hair color in humans. The pale skin associated with red hair may have been advantageous in far-northern climates where sunlight is scarce. Studies by Bodmer and Cavalli-Sforza (1976) hypothesized that lighter skin pigmentation prevents rickets in colder latitudes by encouraging higher levels of Vitamin D production and also allows the individual to retain heat better than someone with darker skin. Estimates on the original occurrence of the currently active gene for red hair vary from 20,000 to 100,000 years ago. Red hair is caused by a relatively rare recessive gene, the expression of which can skip generations
http://www.purgatory.net/kornelia/1603/red_hair_facts.htm
Less than four percent of the world population has naturally red hair. That is less than two percent in America. The gene for Ginger hair was discovered in 1995 and this discovery got little attention. This is not consistent as red heads have gotten lots of it. Professor Jonathan Rees conducted a study of redheads at Edinburgh University.He identified the"gene for red hair" the melanocortin 1 receptor (MC1R), found on the 16th chromosome. He found that this single gene was responsible for red hair.
Red hair is a genetic mutation, and is seen on the heads of only four percent of people. Most of these exist in the U.K., the Republic of Ireland, and Australia. The highest percentage of natural redheads in the world is in Scotland (13%), followed closely by Ireland with 10%. In the US, about 2% of the population are natural redheads.
Red headedness is, genetically speaking, a recessive trait. It may appear after several generations of darker hair. Redheads do NOT turn grey. Red hair turned sandy, then white. They are also found to loose their color later in life than people carrying other hair colors.
The first human redheads walked this earth about 50,000 years ago in Africa and then spread throughout Northern Europe. The country name of Russia means "land of reds" in honor of a redheaded Viking by the name of Rurik.
The first redheaded British monarch was a woman. Boudicca was a Celtic warrior was led her people, the Icenti, against the Romans in the C.E. 60âs.
Belief that redheads are witches is a folk belief in Germanic culture. From 1483-1784 thousands of suspected witches were nearly always stripped and searched for âmarks of the devilâ. These included any âabnormalityâ such as freckles, moles, warts, and birthmarks. Red hair was certainly considered an abnormality. Considering the freckle factor for redheads this was a deadly and shocking horror. Somewhere around 45,000 women were tortured and murdered usually by burning at the stake or by drowning.
.http://hair.lovetoknow.com/Red_Hair
Genetics of Red Hair
Part of the allure of red tresses is its rarity: red is found in less than 4 percent of natural hair colors throughout the world. The majority of redheads are concentrated along the edges of both eastern and western Europe, most notably in Scotland, England, and Ireland; countries that have become easily associated with flowing auburn and ginger tresses. In the United States, less than 2 percent of individuals have naturally red shades of hair. The exclusivity of red is due to its genetic makeup: the red chromosome for hair color is a recessive gene, meaning that an individual must inherit the gene from both parents in order to have red locks of any shade.
Redheads have other genetic traits related to their hair color. Red is found predominantly on individuals with very fair skin who are typically more sensitive to ultraviolet radiation, meaning they sunburn easily, and their hair may also need additional radiation protectants. Each individual red strand is thicker than its blonde, black, or brunette counterparts, but redheads typically have up to 30 percent fewer strands on their heads, making hair loss and thinning a potential concern.
http://en.wikipedia.org/wiki/Red_hair
red hair (also referred to as titian or ginger hair) varies from a deep burgundy through burnt orange to bright copper. It is characterized by high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin. Approximately 1% to 2% of the human population has red hair. It occurs more frequently (between 2% and 6% of the population) in northern and western Europeans, and their descendants, and at lower frequencies throughout other parts of the world. Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein. It is associated with fair skin color, lighter eye colors (gray, blue, green, and hazel), freckles, and sensitivity to ultraviolet light.
ORIGINS
Red hair is the rarest natural hair color in humans. The pale skin associated with red hair may have been advantageous in far-northern climates where sunlight is scarce. Studies by Bodmer and Cavalli-Sforza (1976) hypothesized that lighter skin pigmentation prevents rickets in colder latitudes by encouraging higher levels of Vitamin D production and also allows the individual to retain heat better than someone with darker skin. Estimates on the original occurrence of the currently active gene for red hair vary from 20,000 to 100,000 years ago. Red hair is caused by a relatively rare recessive gene, the expression of which can skip generations
http://www.purgatory.net/kornelia/1603/red_hair_facts.htm
Less than four percent of the world population has naturally red hair. That is less than two percent in America. The gene for Ginger hair was discovered in 1995 and this discovery got little attention. This is not consistent as red heads have gotten lots of it. Professor Jonathan Rees conducted a study of redheads at Edinburgh University.He identified the"gene for red hair" the melanocortin 1 receptor (MC1R), found on the 16th chromosome. He found that this single gene was responsible for red hair.
Red hair is a genetic mutation, and is seen on the heads of only four percent of people. Most of these exist in the U.K., the Republic of Ireland, and Australia. The highest percentage of natural redheads in the world is in Scotland (13%), followed closely by Ireland with 10%. In the US, about 2% of the population are natural redheads.
Red headedness is, genetically speaking, a recessive trait. It may appear after several generations of darker hair. Redheads do NOT turn grey. Red hair turned sandy, then white. They are also found to loose their color later in life than people carrying other hair colors.
The first human redheads walked this earth about 50,000 years ago in Africa and then spread throughout Northern Europe. The country name of Russia means "land of reds" in honor of a redheaded Viking by the name of Rurik.
The first redheaded British monarch was a woman. Boudicca was a Celtic warrior was led her people, the Icenti, against the Romans in the C.E. 60âs.
Belief that redheads are witches is a folk belief in Germanic culture. From 1483-1784 thousands of suspected witches were nearly always stripped and searched for âmarks of the devilâ. These included any âabnormalityâ such as freckles, moles, warts, and birthmarks. Red hair was certainly considered an abnormality. Considering the freckle factor for redheads this was a deadly and shocking horror. Somewhere around 45,000 women were tortured and murdered usually by burning at the stake or by drowning.
.http://hair.lovetoknow.com/Red_Hair
Genetics of Red Hair
Part of the allure of red tresses is its rarity: red is found in less than 4 percent of natural hair colors throughout the world. The majority of redheads are concentrated along the edges of both eastern and western Europe, most notably in Scotland, England, and Ireland; countries that have become easily associated with flowing auburn and ginger tresses. In the United States, less than 2 percent of individuals have naturally red shades of hair. The exclusivity of red is due to its genetic makeup: the red chromosome for hair color is a recessive gene, meaning that an individual must inherit the gene from both parents in order to have red locks of any shade.
Redheads have other genetic traits related to their hair color. Red is found predominantly on individuals with very fair skin who are typically more sensitive to ultraviolet radiation, meaning they sunburn easily, and their hair may also need additional radiation protectants. Each individual red strand is thicker than its blonde, black, or brunette counterparts, but redheads typically have up to 30 percent fewer strands on their heads, making hair loss and thinning a potential concern.
Is everyone with red hair related in some way to the Scottish and irish, for example Queen Elizabeth the first?
Hello
nicole kidman, ronald macdonald etc
Answer
NO.
= Red hair has also been found in Asia, notably among the Tocharians who occupied the northwesternmost province of what is modern-day China. Estimates on the original occurrence of the currently active gene for red hair vary from 20,000 to 100,000 years ago Red hair is the rarest natural hair colour in humans.
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The pale skin associated with red hair may be of advantage in far-northern climates where sunlight is scarce. Studies by Bodmer and Cavalli-Sforza (1976) hypothesized that lighter skin pigmentation prevents rickets in colder latitudes by encouraging higher levels of Vitamin D production and also allows the individual to retain heat better than someone with darker skin.
---------------------
= Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a change in the MC1R protein. It is associated with fair skin colour, freckles, and sensitivity to ultraviolet light, as the mutated MC1R protein is found in the skin and eyes instead of the darker melanin.
= Approximately 1% to 2% of the human population has red hair. It occurs more frequently (between 2% and 6% of the population) in northern and western Europeans, and their descendants, and at lower frequencies throughout other parts of Europe, Asia and Africa.
----------------------
The accepted theory is that human beings originally all had dark sking and dark hair. Characteristics like white skin and red hair were mutations which were useful to people at northern latitudes where the lack of sunlight made absorption of vitamin D difficult. White skin is basically a throwback to our prehuman ancestors that all have white skin under their fur.
NO.
= Red hair has also been found in Asia, notably among the Tocharians who occupied the northwesternmost province of what is modern-day China. Estimates on the original occurrence of the currently active gene for red hair vary from 20,000 to 100,000 years ago Red hair is the rarest natural hair colour in humans.
------------------
The pale skin associated with red hair may be of advantage in far-northern climates where sunlight is scarce. Studies by Bodmer and Cavalli-Sforza (1976) hypothesized that lighter skin pigmentation prevents rickets in colder latitudes by encouraging higher levels of Vitamin D production and also allows the individual to retain heat better than someone with darker skin.
---------------------
= Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a change in the MC1R protein. It is associated with fair skin colour, freckles, and sensitivity to ultraviolet light, as the mutated MC1R protein is found in the skin and eyes instead of the darker melanin.
= Approximately 1% to 2% of the human population has red hair. It occurs more frequently (between 2% and 6% of the population) in northern and western Europeans, and their descendants, and at lower frequencies throughout other parts of Europe, Asia and Africa.
----------------------
The accepted theory is that human beings originally all had dark sking and dark hair. Characteristics like white skin and red hair were mutations which were useful to people at northern latitudes where the lack of sunlight made absorption of vitamin D difficult. White skin is basically a throwback to our prehuman ancestors that all have white skin under their fur.
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Title Post: Is red hair a mutation that can happen to anyone who is Caucasian or mixed or does it have a specific origin?
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Author: Yukie
Thanks For Coming To My Blog
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