Lecture
This lecture delves into a case study involving a girl with trisomy 7, exploring the mechanisms behind the correction of trisomies during meiosis and mitosis, the implications of mosaicism, and the challenges in diagnosing and understanding genetic disorders like trisomy 21. The instructor explains the process of karyotyping, the significance of non-disjunction events, and the impact of trisomies on cell development. The lecture also touches on prenatal diagnostic techniques such as amniocentesis and pre-implantation genetic testing, highlighting the complexities of genetic inheritance and the variability in gene expression patterns between maternal and paternal chromosomes.