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

Histones are proteins for chromatin to wrap around. You can't see them on a karyotype.

electronic measurement tools display data on a screen after waiting for several minutes.

while some business owners prefer manual record keeping systems, most businesses use an electronic record keeping system - making it easier to capture information, generate reports and meet tax and legal reporting requirements.

explanation: