Across
- 4. recessive pattern
- 6. many shapes
- 7. about 20,000 in all for a human
- 9. female reproductive cell
- 11. comes from both of your parents
- 13. different variations of polymorphic
- 14. also called identical twins
- 18. DNA molecules are stored on a
Down
- 1. the inability to conceive after at least a year of trying
- 2. another word for genetic inheritance
- 3. also know as trisomy 21
- 5. also called fraternal twins
- 7. the entire packet of instructions to make a living organism
- 8. sperm and ovum combine to form a new living cell
- 10. stored on a chromosome
- 12. an addiction to alcohol
- 15. each human reproductive cell
- 16. male reproductive cell
- 17. the actual appearance and manifest behavior of the person
- 19. able to produce any type of cell