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a] How many pairs of chromosomes are pre...

a] How many pairs of chromosomes are present in human beings? Out of these, how many are sex-chromosomes?
b] How many types of sex-chromosomes are found in human Beings?

Text Solution

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a] 23 pairs. Out of these, pair of chromosomes are sex chromosomes and the remaining 22 pairs are autosomes
b] Two types.
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Knowledge Check

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    6 pairs
    B
    9 pairs
    C
    12 pairs
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    15 pairs

  • How many ribs are present in human beings?

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    6 pairs
    B
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    1 and 2 respectively
    B
    2 and 1 respectively
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    2 and 3 respectively
    D
    3 and 4 respectively

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