Question

a(n) ______ is a mutated regulatory gene that causes cancer.
options: plasmogene, toxogene, oncogene, monogene, neogene

Explanation:

To solve this, we analyze each option:

• Plasmogene: Related to cytoplasmic inheritance, not cancer.
• Toxogene: Not a term for cancer - causing genes.
• Oncogene: By definition, a mutated regulatory gene that can cause cancer.
• Monogene: Refers to a single gene, not cancer - related.
• Neogene: A geological period, not a gene type.

Answer:

C. oncogene