What can be inferred from the schematic diagram given below?

The probability of getting a boy or girl is 50%

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The probability of getting a boy is higher than that of a girl

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The probability of getting a girl is higher than that of a boy

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The probability of getting a boy or girl varies

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Solution

The correct option is B The probability of getting a boy or girl is 50%
Human females have XX chromosomes and males have XY chromosomes. The sperm may contain either X or Y chromosome. The sperm is the factor in deciding the sex of the child. If the sperm carries an X chromosome, it will fuse with the egg’s X chromosome to form a female. If the sperm carries a Y chromosome, it will result in a male child. Hence the probability of getting a boy or girl is 50%. Thus the correct answer is option A.

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