Question

Turner’s syndrome does not occur in males (44 + Y) because?
A. An ovum is seldom devoid of X-chromosome
B. A male sperm does not penetrate X-deficient ovum
C. Foetus with 44+Y complement dies
D. Unexplained

Answer 1

Hint: Turner syndrome, a condition that only happens in females. Due to this, one of the X chromosomes is missing completely or partially. And results in immature sex organs, shorter height, heart defects, etc.

Complete answer: Turner's syndrome is due to a chromosomal abnormality in which some parts are missing X-chromosomes. For Turner’s syndrome, it should be devoid of an X-Chromosomes. For this to occur in male, female ovum must be devoid X Chromosome.

Turner’s syndrome can be diagnosed before birth, during infancy or in early childhood. It sometimes may delay until the teen or young adult years. If a female having Turner’s syndrome is taken care and with proper medication and regular checkup patients can have a good and healthy life.

Ultrasounds of babies having Turner syndrome show large fluid collection on the back of the neck or other abnormal fluid collection called edema. This can also show heart abnormalities and kidney abnormalities.
Turner’s syndrome may be due to monosomy which is complete absence of chromosome because of error in the father’s sperm or due to the mother's cell that is ovule.

Another reason is mosaicism, in which errors can occur during cell division of zygote in which some cells will have a single copy of X chromosome and others may have two copies of X chromosome.
In some cases, X chromosome abnormalities can be the result of Turner’s syndrome, some missing part of the female egg cell or immature egg cell.

Now, for turner’s syndrome to happen in male, it should be devoid of an X chromosome, which can happen if the female ovum is devoid of X chromosome which will never happen. Hence, a sperm or male gamete carrying a Y chromosome will definitely mate with an X chromosome present in the ovum and the result will be a zygote having XY normal condition.

Thus, the correct answer is option ‘A’ which is A ovum is seldom devoid of x chromosome.

Note: Turner’s syndrome is present mainly in females only but to occur in male specific conditions. And a person with this syndrome can have a normal and healthy life if properly taken care and proper medication is taken. Thus, this syndrome is not life taking.