The chromosomal disorder 22q11.2 deletion syndrome (22q) has emerged as one of the strongest risks for schizophrenia. Scientists at St. Jude Children's Research Hospital identified malformed regions ...

Human egg cells are often prone to chromosomal errors. As women age, the error rate increases sharply — and can contribute to infertility, pregnancy loss, and ...

Abnormalities in the structure of chromosomes within someone’s genetic makeup are called structural chromosomal abnormalities. Robertsonian translocations are very rare structural chromosomal ...

Generally, a person is born with 2 sets of chromosomes (46 chromosomes). So, what if the fetus has 69 chromosomes (three sets)? This condition is called triploidy. A fetus with this extra chromosome ...