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Question by Morgan: What are some reasons for hair loss in young females?
Im 25yrs old.And have hair everywhere.I pull out hand fulls every time I run my fingers threw my hair.Its all over my clothes,pillows,couch,car,shower…everywhere!what could be the problem?

Best answer:

Answer by SHEETAL PAREKH
. Your diet and eating habits could potentially cause hair loss if you don’t watch what foods you consume. The typical western diet doesn’t have the nutrients needed to sustain strong healthy hair for many people. That’s one of the main reasons why hair loss is so typical in western society and so rare in many eastern regions.

vitamins and minerals you need for strong healthier hair and hair killing food additives that could potentially cause hair growth problems.

What do you think? Answer below!

Question by pinkpanther: What is the expected frequency of pattern-bald males and pattern bald females in the population?
Pattern baldness in humans is an autosomal, sex-influenced trait; it is dominant in males and recessive in females. A male with at least one copy of the pattern baldness (PB) is bald; however, two copies of this allele must be present for a female to be bald. The frequency of the PB allele in a particular population has been estimated to be 0.3. Assuming random mating, what is the expected frequency of pattern-bald males and pattern bald females in the population?

Best answer:

Answer by Abu
To make simple, b is allele for baldness and B is for normal.
p(B) = 0.7
q(b) = 0.3

According to Hardy-Weinberg:
(p + q)^2 = p^2 + 2pq + q^2

So, the frequency of
p^2(BB) = (0.7)^2 = 0.49 (normal males and females)
2pq(Bb) = 2 x 0.7 x 0.3 = 0.42 (bald males or normal females)
q^2(bb) = (0.3)^2 = 0.09 (bald males and females)

Since in males, b is dominant over B; and in females B is dominant over b, then the expected frequency of
- pattern-bald males = 1/2 (sex) x (0.42 + 0.09) (baldness) = 0.255
- pattern-bald females = 1/2 (sex) x (0.09) (baldness) = 0.045

and
- normal males = 1/2 x 0.49 = 0.245
- normal females = 1/2 x (0.49 + 0.42) = 0.455

Know better? Leave your own answer in the comments!

My hormon level of testosteron tested on II and III day of menstrual cycle didn`t show excess levels but I have understood that the levels are not important for hair loss but the hair folicules sensitivity to 5-aDHT?? Is it true? I`m 26 years old female. And do anyone on this whole world knows something exact about long-lasting problems with hair loss in women? Is it effective to use antiandrogen pills(androgen blocators)or they are more harmfull then usefull?

My friend is experiencing hair loss and she doesn’t know why. She is 30 years old. Her hair is coming out in handfuls. Any ideas?

Pattern baldness in humans is an autosomal, sex-influenced trait; it is dominant in males and recessive in females. A male with at least one copy of the pattern baldness (PB) is bald; however, two copies of this allele must be present for a female to be bald. The frequency of the PB allele in a particular population has been estimated to be 0.3. Assuming random mating, what is the expected frequency of pattern-bald males and pattern bald females in the population?