Question

all of the following would be visible on a karyotype except aneuploidy. polysomy. trisomy. histones.

Explanation:

A karyotype is an image of an individual's chromosomes. Aneuploidy (abnormal number of chromosomes), polysomy (extra chromosomes), and trisomy (three copies of a chromosome instead of two) can be seen as they involve changes in chromosome number. Histones are proteins that package DNA; they are too small and not visible at the level of a karyotype.

Answer:

histones.