Pathology All of the following statements are true regarding retinoblastoma, except: A Rb genes play major role in cell cycle regulation B Require deletion of both the Rb genes C Familial variant is autosomal dominant in inheritance D Rb gene is on chromosome 14p13 💡 Explanation All of the following statements are true regarding retinoblastoma, except: ✓ Correct Answer: D. Rb gene is on chromosome 14p13