Name the molecule that makes up chromosomes

         A chromosome is composed  of DNA

In the nucleus of every cell, the DNA molecule is packaged within thread-like formations known as chromosomes. Each chromosome is composed up of DNA tightly looped many times around proteins termed histones that maintain its structure

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

yes i have all the correct answers

1. c 6. b. 11. c

2. a 7. d. 12. d

3. c 8. b. 13. c

4. d 9. c. 14. d

5. c 10. d. 15. a

16. d. 21. a

17. d.

18. a. 22-30 you must do on

19. d. your own

20. d.