Across
- 2. A ring of muscle that controls the passage of material between digestive organs
- 3. , A chart tracking the inheritance of a trait through generations of a family
- 7. An image showing an organism's chromosomes arranged in pairs
- 8. An allele whose effect is masked in a heterozygote
- 10. A structure made of tightly coiled DNA that carries genetic information
- 13. The scientific term for chewing
- 14. The stomach enzyme that begins protein digestion
- 18. The rhythmic expansion of an artery felt with each heartbeat
- 19. The paired organs where gas exchange with the blood occurs
- 22. A burning sensation caused by stomach acid entering the esophagus
- 23. The organ that produces bile
- 24. A structure that prevents backflow of blood within the heart
- 26. A pattern where both alleles are fully expressed in the phenotype, as in AB blood type
- 27. The enzyme that breaks down fats
- 28. A lower chamber of the heart that pumps blood out
- 29. The inner lining layer of the digestive tract
Down
- 1. Having two different alleles for a gene
- 4. A reproductive cell containing half the normal chromosome number
- 5. A segment of DNA that codes for a specific trait
- 6. The wave-like muscle contractions that move food through the digestive tract
- 9. The process of drawing air into the lungs
- 11. , Having two identical alleles for a gene
- 12. The liquid, straw-colored component of blood
- 14. The force blood exerts on artery walls, measured in mmHg
- 15. The passing of traits from parents to offspring
- 16. The largest artery in the body, carrying blood from the left ventricle
- 17. The muscular tube connecting the throat to the stomach
- 20. The organ that stores and concentrates bile
- 21. A blood vessel that carries blood away from the heart
- 25. An upper chamber of the heart that receives incoming blood