<prompt> Karyotyping is useful in diagnosis of -Autosomal recessive disordersX-linked recessive disordersChromosomal abnormalitiesBiochemical abnormalities  <response>: Ans. is c i.e., Chromosomal abnormalitieso Karyotyping is the study of chromosomes and is used in cytogenetics to study the chromosomal abnormalities. o After arresting the cells in metaphase the chromosomes are examined to see for:i Numbers -- to detect abnormalities in chromosome numbers such as aneuploidy trisomy, tetrasomy, polyploidy.ii Structure --- to detect structural chromosomal anomalies such as translocations, deletions, inversions. 