Genotype of a Down's syndrome is
$45 + XX$
$44 + XY$
$44 + XXY$
$22 + XY$
Which of the following is not related to chromosomal aberration
The monosomic condition in human beings depicted as $XO$ is referred to as
In which of the following disorder gynaecomastia symptom is seen in individuals?
In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes