Trisomy 21, or Down syndrome, is caused by an extra copy of chromosome 21 and affects one in 660 newborns. It causes mental retardation and physical characteristics such as slanted eyes and a protruding tongue. Individuals may also experience delayed growth, congenital heart defects, and gastrointestinal abnormalities. There is no cure, but treatments aim to […]
Trisomy 21, or Down syndrome, occurs when a child has three copies of chromosome 21 instead of the typical two. It is not hereditary or caused by environmental factors, and there is no known cure. Diagnostic tests can be performed during pregnancy, and early intervention programs can help with development. Chromosome 21 is also related […]
Trisomies occur when cells have three chromosomes instead of two, with Down syndrome being the most common mutation affecting the 21st chromosome. Edwards syndrome affects the 18th chromosome and Patau syndrome affects the 13th. Advancing maternal age increases the risk, but prenatal vitamins before conception can reduce it. Most trisomies are detected before delivery through […]
Trisomy 18 is a genetic disorder caused by an extra copy of chromosome 18, leading to severe organ and brain development impairments. It is the second most common chromosomal defect, with symptoms including birth defects, underdeveloped brains, and physical deformities. Treatment aims to reduce pain and repair structural abnormalities, but survival beyond adolescence is rare. […]
