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Principles Of Inheritance And Variation

Question
CBSEENBI12002366
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A human female with Turner's syndrome

  • has 45 chromosomes with XO

  • has one additional X - chromosome

  • exhibits male characters

  • is able to produce children with normal husband

Solution

A.

has 45 chromosomes with XO

Turner syndrome is a chromosomal condition that affects the development in females. The most common feature of Turner syndrome is short stature, which becomes evident by the age of about 5. An early loss of ovaries develop normally at first, but egg cells usually die prematurely and most ovarian tissue degenerates before birth. In other words, the absence of one of the X - chromosome i.e., 45 with XO (or 44 + XO).

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