Question

Which type of gene is most likely to be widely expressed in the body of someone who has a superficial scrape?

the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of cardiac cells

Answer 1

the gene that controls the production of skin cells

Reason: a superficial scrape involves the skin, so genes for skin cell growth and repair will be active across the body's skin. Genes for red blood cells or cardiac cells are specific to their tissues and stem‑cell production genes are localized to stem cell niches.