You can use a chromosomal karyotype to see if there are any abnormalities with the normal 23 pairs of chromosomes that every healthy human has. Different abnormalities like an extra chromosome (trisomy), missing a chromosome (Minos omg), or having certain parts missing or added on can lead to a person to be diagnosed with certain disease (ex: Down syndrome is an extra chromosome on the 21st chromosome).
Hope this helps!
Https://quizlet.com/58016588/biology-chapter-7-assessment-flash-cards/
I am assuming that since you are in a biology class, you are looking for the answer: cells.
Hope this helps! <3
