Question

which type of disease is least likely to be able to be treated using genome editing with talen or crispr? multiple choice leukemia huntingtons trisomy - 21 cystic fibrosis

Explanation:

TALEN and CRISPR are gene - editing tools. Leukemia, Huntingtons, and Cystic fibrosis are caused by single - gene mutations or abnormalities in somatic cells which could potentially be targeted by gene editing. Trisomy - 21 is caused by the presence of an extra copy of chromosome 21 (a whole - chromosome abnormality), which is much more complex to correct with current gene - editing techniques as it involves manipulating a large segment of the genome and the presence of an entire extra chromosome.

Answer:

C. Trisomy - 21