Which of the following disorders can be observed in a human karyotype?
A colorblindness
C cystic fibrosis
D sickle cell disease
B trisomy 21

Ifound this on google “aristotle (384–322 bc) in western scientific taxonomy the greek philosopher aristotle was the first to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called animals with blood and without blood.” i hope this you for what your looking for.

The correct answer is b

Idont know but good luck; )