Multiple choice Which among the following is caused by microdeletion of chromosome 22q11.2? Velo-cardio-facial syndrome Fragile X syndrome Rett syndrome Bloom syndrome Reveal answer Fill a bubble to check yourself A Correct answer Explanation It is a chromosomal disorder and is caused by microdeletion of chromosome 22q11.2. It is not visible cytogenetically, but detectable by FISH or comparative genomic hybridization.