Q. my hair is way past my shoulders and im jw how long it will be in a year?
Answer
Hair is actually dead material when it leaves it's root - otherwise it would hurt very much when your hairdresser works with his scissor. Most people know that, but do you know about these facts:
A blonde head of hair has usually much more strands than red or dark haired heads.
Hair consists mainly of keratin, which is also responsible for the elasticity of fingernails.
A single hair has a thickness of 0.02 - 0.04mm, so that 20 - 50 hair strands next to each other make one millimeter.
Hair is strong as a wire of iron. It rips after applying a force equivalent to 60kg, only after it stretched itself for about 70%.
Even on a good hair day, everyone loses at least 40 to 100 strands.
The average scalp has 100,000 strands, or just fewer than 1000 per square inch.
We are born with all our hair follicles. Some are programmed to grow pigmented hair (as on our scalp) up to 3 feet in length.
In America in '96, 38 million men and 19 million women experience common hair loss determined by heredity.
The trait for baldness can be passed down through paternal or maternal genes.
Hormone imbalance and crash dieting can trigger temporary hair loss.
Hair biology
The root of a hair strand sticks in a bag in the skin. The strand is pushed out of this bag about 0.35mm per day, making an average growth rate of 1cm, or half of an inch, per month. The growth rate is however very much related to the individual person, his age, his diet etc.
Healthy hair has an average lifetime of 2-6 years. After a rest period of three months the single hair falls out, and a new strand starts to grow out of the bag. The lifetime depends on circumstances and person, too.
The lifetime of hair is responsible for the maximum of hair length you can have. Waist length hair takes about 6 years to grow out from a short hair cut, periodic trims included. If your hair has a life cycle of 2 years, you will never achieve a nice waist length mane.
Hair is actually dead material when it leaves it's root - otherwise it would hurt very much when your hairdresser works with his scissor. Most people know that, but do you know about these facts:
A blonde head of hair has usually much more strands than red or dark haired heads.
Hair consists mainly of keratin, which is also responsible for the elasticity of fingernails.
A single hair has a thickness of 0.02 - 0.04mm, so that 20 - 50 hair strands next to each other make one millimeter.
Hair is strong as a wire of iron. It rips after applying a force equivalent to 60kg, only after it stretched itself for about 70%.
Even on a good hair day, everyone loses at least 40 to 100 strands.
The average scalp has 100,000 strands, or just fewer than 1000 per square inch.
We are born with all our hair follicles. Some are programmed to grow pigmented hair (as on our scalp) up to 3 feet in length.
In America in '96, 38 million men and 19 million women experience common hair loss determined by heredity.
The trait for baldness can be passed down through paternal or maternal genes.
Hormone imbalance and crash dieting can trigger temporary hair loss.
Hair biology
The root of a hair strand sticks in a bag in the skin. The strand is pushed out of this bag about 0.35mm per day, making an average growth rate of 1cm, or half of an inch, per month. The growth rate is however very much related to the individual person, his age, his diet etc.
Healthy hair has an average lifetime of 2-6 years. After a rest period of three months the single hair falls out, and a new strand starts to grow out of the bag. The lifetime depends on circumstances and person, too.
The lifetime of hair is responsible for the maximum of hair length you can have. Waist length hair takes about 6 years to grow out from a short hair cut, periodic trims included. If your hair has a life cycle of 2 years, you will never achieve a nice waist length mane.
Why does my daughter have red hair when I have blonde and my husband has brown?
Brielle
My husbands grandfather had red hair but I though that red hair was a dominant gene so one of the parents had to pass it or both of us had to pass one recessive?? I dont have any red hair on my side of the family. And her hair is VERY red lol!
Answer
This was actually discovered using pea plants by a scientist named Mendell (i can not recall his first name) during the 19th century. He was a priest and devoted his free time (practically his life) to unlock the secrets of heredity. Long story short, he discovered that there are actually gene pairs that consist of a dominant chromosome and an inferior chromosome, in any order. The only way in which the inferior gene can take over is by being paired with it's self, otherwise the dominant gene will portray itself. An example is the 23rd chromosomes, the X for female (inferior by definition) and the Y for male (dominant gene). If the pair contains a Y, like XY, the child is a boy. If XX, it is a girl. There is no 50-50, it is either the dominant is present and portrays itself, or it is only the inferior genes and they portray themselves.
Red Hair is an inferior gene, so both of you have to have been carriers (the technical name) of the gene, while your dominant color genes, blonde and brown, had decided yours. You had a 1 in 4 chance of having a red head, and sure enough that 25% won. She received the two inferior genes from you only.
I could go more in depth, but then everything gets a bit in depth with conception and fertilization and genetics, and I'm sure you barely read all of that! :)
hope that helps you understand
This was actually discovered using pea plants by a scientist named Mendell (i can not recall his first name) during the 19th century. He was a priest and devoted his free time (practically his life) to unlock the secrets of heredity. Long story short, he discovered that there are actually gene pairs that consist of a dominant chromosome and an inferior chromosome, in any order. The only way in which the inferior gene can take over is by being paired with it's self, otherwise the dominant gene will portray itself. An example is the 23rd chromosomes, the X for female (inferior by definition) and the Y for male (dominant gene). If the pair contains a Y, like XY, the child is a boy. If XX, it is a girl. There is no 50-50, it is either the dominant is present and portrays itself, or it is only the inferior genes and they portray themselves.
Red Hair is an inferior gene, so both of you have to have been carriers (the technical name) of the gene, while your dominant color genes, blonde and brown, had decided yours. You had a 1 in 4 chance of having a red head, and sure enough that 25% won. She received the two inferior genes from you only.
I could go more in depth, but then everything gets a bit in depth with conception and fertilization and genetics, and I'm sure you barely read all of that! :)
hope that helps you understand
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