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The number of chromosomes in Turner's sy...

The number of chromosomes in Turner's syndrome is

A

45

B

43

C

44

D

42

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Turner Syndrome**: Turner syndrome is a genetic condition that affects females, characterized by the absence of one of the X chromosomes. 2. **Chromosomal Composition**: Normally, females have two X chromosomes (XX) and a total of 46 chromosomes (44 autosomes + 2 sex chromosomes). In Turner syndrome, one of the X chromosomes is missing. 3. **Identifying Monosomy**: The term "monosomy" refers to the loss of one chromosome from a pair. In the case of Turner syndrome, it is the loss of one X chromosome, leading to a chromosomal formula of 44 + X0 (where X0 indicates the absence of one X chromosome). 4. **Calculating Total Chromosomes**: Therefore, the total number of chromosomes in a female with Turner syndrome is: - 44 (autosomes) + 1 (the remaining X chromosome) = 45 chromosomes. 5. **Conclusion**: The number of chromosomes in Turner syndrome is 45. **Final Answer**: The number of chromosomes in Turner’s syndrome is 45. ---
**Step-by-Step Solution:** 1. **Understanding Turner Syndrome**: Turner syndrome is a genetic condition that affects females, characterized by the absence of one of the X chromosomes. 2. **Chromosomal Composition**: Normally, females have two X chromosomes (XX) and a total of 46 chromosomes (44 autosomes + 2 sex chromosomes). In Turner syndrome, one of the X chromosomes is missing. 3. **Identifying Monosomy**: The term "monosomy" refers to the loss of one chromosome from a pair. In the case of Turner syndrome, it is the loss of one X chromosome, leading to a chromosomal formula of 44 + X0 (where X0 indicates the absence of one X chromosome). ...
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Knowledge Check

  • Number of X chromosomes in Turneer 's syndrome is

    A
    3
    B
    2
    C
    1
    D
    Zero

  • Turner syndrome is

    A
    XO
    B
    XXY
    C
    XXX
    D
    XYY

  • The number of chromosomes in Klinefelter's syndrome is

    A
    47 (44 + XXY)
    B
    47 (44 + XXX)
    C
    47 (46 + 1 chromosome 21)
    D
    None of these

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    The chromosome condition in Turner syndrome is :

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