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Question
How many chromosomes are present in humans? What are autosomes and allosomes? Which pair of chromosomes is responsible for sex-determination?
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Solution
* There are 46 chromosomes in human body which are of two types: autosomes and sex chromosomes. [1 mark]
* Autosomes are exactly similar chromosomes in both males and females. These are found in somatic cells. [1 mark]
* There are 22 pairs of autosomes in human beings which does not take part in sex-determination. [1 mark]
* Sex chromosomes - X and Y takes part in sex determination. (XX) for females and (XY) for males. [1 mark]
* There are 46 chromosomes in human body which are of two types: autosomes and sex chromosomes. [1 mark]
* Autosomes are exactly similar chromosomes in both males and females. These are found in somatic cells. [1 mark]
* There are 22 pairs of autosomes in human beings which does not take part in sex-determination. [1 mark]
* Sex chromosomes - X and Y takes part in sex determination. (XX) for females and (XY) for males. [1 mark]
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