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In human being, the statistical probab...

In human being, the statistical probability of getting either a male or female child is 50:50 . Give a suitable explanation.

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The sex of an infant is determined by the type of sex chromoscme contributed by the male gamete. A maile produces two types of sperms-one type bears 22+X composition and the Other, 22+ Y Therefore, a male have 50% sperms with X-chromosomes and other 50% with Y-chromosome.
Any one of the two types of sperms can fertilise the egg I a Y-bearing sperm fertilises the egg. the zygote will be XY (male) and when an X-bearing sperm fertilises the egg, the resulting zygote will be XX (fermale). Since the ratio of X-chromosome and Y -chromosomes in male gamete is 50: 50 The statistical probability of male or a female infant is also 50:50.
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In human beings, the statistical probability of getting either a male or female child is 50:50. Give a suitable explanation.

In human beings, the statistical probability of getting either a male or female child is 50:50. Give a suitable explanation.

Knowledge Check

  • Assertion (A) : In human beings, the statistical probability of getting either a male or a female child is 50 : 50. Reason (R ) : The gametes of the male parents are of two types, and decide the sex of the child.

    A
    Both (A) and (R) are true and (R) is correct explanation of the assertion.
    B
    Both (A) and (R) are true but (R) is not the correct explanation of the assertion.
    C
    (A) is true but (R) is false.
    D
    (A) is false but (R) is true.

  • The probability of either a male or a female child in a pregnancy is

    A
    Always 50%
    B
    Dependent on the ratio of the children, the couple has already
    C
    Dependent on the number of male child, the couple has
    D
    Dependent on the number of female child, the couple has

  • Assertion: In each pregnancy there is always 50 per cent probability of either a male or a female child. Reason: The genetic makeup of the sperm determines the sex of child.

    A
    If both assertion and reasons are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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