Across 1. Ova 3. Windsor knot 8. Inborn 9. Arguably 10. Erect 11. Dolls 13. Fused 15. Altered 16. So-and-so 20. Tries 21. Hunch 24. Tortilla 25. Potash 26. Burkina Faso 27. Lop
Down 1. Olive branch 2. Albrecht Durer 3. Worst 4. Dead as a doornail 5. Round 6. Nibble 7. Tay 12. Scholarship 13. Fleet 14. Drops 18. Distaff 19. Snorer 22. Haiti 23. Duomo 24. Tab
