A picture, or chromosome map, of all 46 chromosomes is called a karyotype. The karyotype can help identify abnormalities in the structure or the number of chromosomes. To help identify chromosomes, the pairs have been numbered from 1 to 22, with the 23rd pair labeled "X" and "Y."

Conventional chromosome analysis showed the presence of an abnormal chromosomal complement with 2 normal X chromosomes and no Y chromosome in all subjects, suggesting a 46,XX karyotype in phenotypically male individuals. Case 1 showed a normal female chromosome complement along with the presence of heterochromatin on the long arm of chromosome ...

The sex of an embryo is determined by genetic sex due to presence or absence of Y chromosome, but it may not be true in all. We hereby report an interesting case of a phenotypic male carrying a female karyotype (46 XX). A 26-year-old male presented with bilateral gynecomastia, poor development of secondary sexual characters and azospermia.

Each human cell holds 22 pairs of autosomes and a pair of sex chromosomes (female: XX, male: XY). In karyotyping, autosomes are sorted by size. Critical findings in conventional karyotyping reveal aneuploidies that involve having one or more extra chromosomes or having missing chromosomes and structural abnormalities such as translocation ...

47,XYY syndrome is a sex chromosomal abnormality observed in humans, with a prevalence of 0.1% of male births. Sex chromosome anomalies are more frequently associated with male infertility. We present here four cases of infertile men with azoospermia or severe oligozoospermia attending a genetic and fertility clinic.