Question

what would a karyotype of hela cells contain? trisomy 21 many copies of chromosomes abnormalities on 1st gene several triploid cells

Explanation:

HeLa cells are cancerous cells with genetic instability. They often have an abnormal number of chromosomes (aneuploidy), which means having many copies of chromosomes. Trisomy 21 is specific to Down syndrome. Abnormalities on the 1st gene is too vague. Triploid cells have three sets of chromosomes, but HeLa cells are more characterized by having many copies (aneuploidy rather than a specific ploidy like triploidy in a general sense for all cells in the karyotype).

Answer:

many copies of chromosomes