What syndrome is known for causing developmental delays and is associated with a chromosomal abnormality?

Down Syndrome is associated with a chromosomal abnormality, specifically an extra copy of chromosome 21, which leads to its alternate name, Trisomy 21. This genetic condition is characterized by several physical and intellectual disabilities, including developmental delays. Individuals with Down Syndrome often present with varying degrees of cognitive impairment, which can manifest as difficulty in learning new skills and reaching developmental milestones such as walking, talking, and social interaction.

The developmental delays commonly associated with Down Syndrome arise from the combination of the extra genetic material and its impact on brain development. This condition underscores the importance of early intervention and specialized educational support to help children with Down Syndrome thrive and reach their full potential.

Other syndromes listed may also involve developmental delays, but they are primarily distinguished by different genetic origins or characteristics. Prader-Willi Syndrome, for instance, involves a deletion on chromosome 15 and is associated with issues like obesity and specific behavioral challenges, while Cri Du Chat Syndrome involves a deletion on chromosome 5 and is characterized by a distinct cat-like cry in infancy. Fragile X Syndrome, caused by a mutation in the FMR1 gene on the X chromosome, is the most common hereditary cause of intellectual disability but is not defined by a chromosomal abnormality in the same