The genotype of a boy having sexual characters of a girl is
$XXX$
$XXY$
$XO$
$XYY$
Down's syndrome is an example of
An abnormal male child is born to normal parents. This child shows a short neck, stubby hands, slanting eyes, permanently open mouth with projecting upper lip and short stature. This abnormality can be attributed to
Failure of cytokinesis after ...$A$... stage of cell division results in an increase in a whole set of chromosomes in an organism called ...$B$...
Which of the following is not related to chromosomal aberration
A pregnant woman who has done aminocentesis test finds an extra Barr body in her embryo. The syndrome which is likely to be associated with the embryois