variation that we're going to do tact on various tests so for example a chromosome analysis to text very large changes the like dancing Down syndrome trilogy it will detect a very large deletions or duplications chromosomes if you wanted to get down smaller if you wanted to detect something some microscopic like the Williamson John deletion you a chromosome analysis would be useless you will need to go for a chromosome microarray analysis which will detect the genomic disorders but again if you wanted to go down even further into the DNA sequence itself if you needed to dissect decide if there is a mutation in a single gene ICNA is useless for that you need to go to DNAsequencing and that's curvy bust
