Most common inherited cause of intellectual disablity

most common inherited cause of intellectual disablity what to answer fragile x or downs and if it is asking mc genetic cause of intellectual disability then What should be the answer

The terms “most common inherited cause of intellectual disability” and “most common genetic cause of intellectual disability” refer to slightly different concepts:

Most Common Inherited Cause of Intellectual Disability

  • Fragile X Syndrome is the most common inherited cause of intellectual disability. It is a genetic condition caused by a mutation in the FMR1 gene on the X chromosome. Since it is inherited in an X-linked dominant manner, it can be passed from parent to child.

Most Common Genetic Cause of Intellectual Disability

  • Down Syndrome is the most common genetic cause of intellectual disability. It is caused by an extra copy of chromosome 21 (trisomy 21). While Down syndrome is a genetic disorder, it is usually not inherited but rather occurs as a result of a random error in cell division.

Summary for Multiple-Choice Questions:

  1. If the question asks for the most common inherited cause of intellectual disability:
  • Answer: Fragile X Syndrome
  1. If the question asks for the most common genetic cause of intellectual disability:
  • Answer: Down Syndrome

This distinction is crucial for accurate diagnosis and understanding of these conditions’ etiology and inheritance patterns.