Anatomy Defect in any of the following may result in renal agenesis except – A Nephrogenic bud B Ureteric bud C Blastema of nephrogenic tissue D Failure of descent of nephrogenic tissue to lumbar area 💡 Explanation Defect in any of the following may result in renal agenesis except - ✓ Correct Answer: D. Failure of descent of nephrogenic tissue to lumbar area