Question
Biology Question on Principles of Inheritance and Variation
A human female with Turner's syndrome
A
has 45 chromosomes with XO
B
has one additional X chromosome
C
exhibits male characters
D
is able to produce children with normal husband.
Answer
has 45 chromosomes with XO
Explanation
Solution
It has 45 chromosomes with XO.
Turner syndrome is a genetic disorder that affects only the female and is due to the absence of two X chromosomes. This is caused due to nondisjunction during the formation of the egg or the sperm. The characteristics cause short stature, low hairline and also a broad chest. At hormonal level there is an imbalance, such as growth hormone deficiency, diabetes and thyroid dysfunction.