red hair color genetics image
Answer
hers a link. theres more info. veeeerrry interesting.
Some of us are drawn to the color Red like a bull in Spain, relentless, fixed, and pure. 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. Some negative such as the association with witches and a crazy temper. Some are positive, such as our love for Lucy, The Little Mermaid, and the Feminist icon of Lilith, the first wife of Adam who insisted on sexual equality. So many deceptive MYTHS are of common knowledge concerning the crimson strand. Read up on the TRUE history of this striking genetic endowment.
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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.//
Biochemistry and genetics
A close-up view of red hairThe pigment pheomelanin gives red hair its distinctive color. Red hair has far more of the pigment pheomelanin than it has of the dark pigment eumelanin.
The genetics of red hair, discovered in 1997, appear to be associated with the melanocortin-1 receptor (MC1R), which is found on chromosome 16. Red hair is associated with fair skin color due to low concentrations of eumelanin throughout the body of those with red hair. This lower melanin-concentration confers the advantage that a sufficient concentration of important Vitamin D can be produced under low light conditions. However, when UV-radiation is strong (like in regions close to the equator) the lower concentration of melanin leads to several medical disadvantages, such as a higher risk of skin cancer.
The MC1R recessive variant gene that gives people red hair and fair skin is also associated with freckles, though it is not uncommon to see a redhead without freckles. Eighty percent of redheads have an MC1R gene variant,[5] and the prevalence of these alleles is highest in Scotland and Ireland. The alleles that code for red hair occur close to the alleles that affect skin color, so it seems that the phenotypic expression for lighter skin and red hair are interrelated.
Red hair can originate from several different changes on the MC1R-gene. If one of these changes is present on both chromosomes then the respective individual is likely to have red hair. This type of inheritance is described as an autosomal recessive mode of inheritance. Even if both parents do not have red hair themselves, both can be carriers for the gene and have a redheaded child. (Red hair genetics).
hers a link. theres more info. veeeerrry interesting.
Some of us are drawn to the color Red like a bull in Spain, relentless, fixed, and pure. 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. Some negative such as the association with witches and a crazy temper. Some are positive, such as our love for Lucy, The Little Mermaid, and the Feminist icon of Lilith, the first wife of Adam who insisted on sexual equality. So many deceptive MYTHS are of common knowledge concerning the crimson strand. Read up on the TRUE history of this striking genetic endowment.
----------------
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.//
Biochemistry and genetics
A close-up view of red hairThe pigment pheomelanin gives red hair its distinctive color. Red hair has far more of the pigment pheomelanin than it has of the dark pigment eumelanin.
The genetics of red hair, discovered in 1997, appear to be associated with the melanocortin-1 receptor (MC1R), which is found on chromosome 16. Red hair is associated with fair skin color due to low concentrations of eumelanin throughout the body of those with red hair. This lower melanin-concentration confers the advantage that a sufficient concentration of important Vitamin D can be produced under low light conditions. However, when UV-radiation is strong (like in regions close to the equator) the lower concentration of melanin leads to several medical disadvantages, such as a higher risk of skin cancer.
The MC1R recessive variant gene that gives people red hair and fair skin is also associated with freckles, though it is not uncommon to see a redhead without freckles. Eighty percent of redheads have an MC1R gene variant,[5] and the prevalence of these alleles is highest in Scotland and Ireland. The alleles that code for red hair occur close to the alleles that affect skin color, so it seems that the phenotypic expression for lighter skin and red hair are interrelated.
Red hair can originate from several different changes on the MC1R-gene. If one of these changes is present on both chromosomes then the respective individual is likely to have red hair. This type of inheritance is described as an autosomal recessive mode of inheritance. Even if both parents do not have red hair themselves, both can be carriers for the gene and have a redheaded child. (Red hair genetics).
Could I have got my genes from my grandfather?
lauren
I have light brown eyes, and thin lips and a pointy nose and I have a really southernish redneckish accent and a lot of people mainly black make fun of me about this. I have a sandish brown red hair color. An my hair is like a biracial paersons hair. My grandfather was mixed race and my great grandfather was white. Could I have got this features from him? My dad is black and my mom is 1/4 white I don't what other races. Could I have got these traits from grandfather?
Answer
You can get genes from all you direct ancestors, although you would need to research genetics or repost in a science/biology category for more information as genetics is not genealogy....................................
You can get genes from all you direct ancestors, although you would need to research genetics or repost in a science/biology category for more information as genetics is not genealogy....................................
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Title Post: What percentage of the world population has red hair, and why?
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Author: Yukie
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Rating: 92% based on 976 ratings. 5 user reviews.
Author: Yukie
Thanks For Coming To My Blog
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