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Name Date Chromosomes Notes Review Period 1. What is a chromosome? 2. Why is genetic information bundled into chromosomes? 3. What is a gene? 4. How many genes can be found on a chromosome? 5. How many chromosomes do humans have? 6. How many chromosomes come from a human mother and how many come from the father? 7. What does “homologous chromosomes” mean? 8. What do the sex chromosomes do? 9. What are the autosomes? 10. How many pairs of autosomes do humans have? 11. How is the Y chromosome different from the X chromosomes? 12. What sex chromosomes do females have? 13. What sex chromosomes do males have? 14. What do ALL egg cells carry? 15. How many sperm cells carry an X chromosome? 16. How many sperm cells carry a Y chromosome? Match the phrase to the correct word. 17. A bundle of genetic material and proteins 18. Two chromosomes that have the same genes at the same locations 19. All of the chromosomes that have nothing that makes you a boy or girl 20. The sex chromosome that is found in ALL eggs. a) b) c) d) e) f) Homologous chromosomes Y chromosome X chromosome Autosomes Gene Chromosome 21. A section of DNA that provides information for a particular protein 22. The sex chromosomes that are only found in males For the following questions, determine which term below correctly matches. Some answers may have more than one answer. Autosomes Sex Chromosome 23. Determines the gender of the person. 24. Chromosomes numbered from 1-22 25. The X chromosome 26. Has genes on them. 27. the Y chromosome For the following phrases, determine if the statement is true or false. If false, change the underlined word to make it true. _____________________28. A normal human received 46 chromosomes from the egg. _____________________29. The Sex Chromosomes are numbered from 1-22 _____________________30. There are usually a hundred genes on a chromosome _____________________31. Genes are bundles of DNA and proteins that form when a cell is going to divide _____________________32. The X and the Y are homologous chromosomes. _____________________33. A normal male receives a X chromosome in the sperm _____________________34. The Autosomes determine if the zygote will be a male or female