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