sex determination in human being
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Here is your answer
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A person can have either a male sex or a female sex. The process by which sex of a newborn individual is determined is called sex determination. There are different strategies by which sex is determined in different species. In some species , environmental factors are important in determining the sex of the developing individual.
The determination of sex occurs largely by genetic control in human beings. The genes inherited from the parents determine the sex of the individual.
In human beings, there are 23 pairs of chromosomes, out of which 22 pairs are autosomes and one pair is sex chromosome. These sex chromosomes vary in males and females. A male has one X and one Y chromosome, i.e. half male gamets or sperms will have short Y chromosome and other half will have X chromosome. A female has two X chromosomes, i.e. all the female gamets or ova will have only X chromosome.
All children obtain either chromosome from both parents. Females have a perfect pair of sex chromosome and thus contribute X chromosome to both the sexs of progeny but males have a mismatched pair in which one is X and the other is Y chromosome.
Hence, an egg fertilized by X carrying sperm results in a zygote with XX, which becomes a female and if an egg is fertilized by Y carrying sperm, It results in a XY zygote that becomes a male.
Thus the sex of the children will be determined by what they inherit from their father. A child who inherit and X chromosome will be a girl and one who inherits a Y chromosome will be a boy.
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I hope you understand my dear friend.
Here is your answer
==============================
A person can have either a male sex or a female sex. The process by which sex of a newborn individual is determined is called sex determination. There are different strategies by which sex is determined in different species. In some species , environmental factors are important in determining the sex of the developing individual.
The determination of sex occurs largely by genetic control in human beings. The genes inherited from the parents determine the sex of the individual.
In human beings, there are 23 pairs of chromosomes, out of which 22 pairs are autosomes and one pair is sex chromosome. These sex chromosomes vary in males and females. A male has one X and one Y chromosome, i.e. half male gamets or sperms will have short Y chromosome and other half will have X chromosome. A female has two X chromosomes, i.e. all the female gamets or ova will have only X chromosome.
All children obtain either chromosome from both parents. Females have a perfect pair of sex chromosome and thus contribute X chromosome to both the sexs of progeny but males have a mismatched pair in which one is X and the other is Y chromosome.
Hence, an egg fertilized by X carrying sperm results in a zygote with XX, which becomes a female and if an egg is fertilized by Y carrying sperm, It results in a XY zygote that becomes a male.
Thus the sex of the children will be determined by what they inherit from their father. A child who inherit and X chromosome will be a girl and one who inherits a Y chromosome will be a boy.
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I hope you understand my dear friend.
Anonymous:
your ans is very good
but , bahut bada hai
Answered by
12
sex determination is usually done by father...
it depends on the chromosomes in the sperm
..
xx=girl
XY=boy
it depends on the chromosomes in the sperm
..
xx=girl
XY=boy
Thanks
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