The Cell & Inheritance
- 1. The Cell & Inheritance Mr. Schumaier C & H 3.3
- 2. 1 What important piece of information did Walter Sutton add to scientists’ understanding of genetics?
- 3. Sutton predicted that chromosomes were key to understanding how offspring come to have traits similar to those of their parents
- 4. 2 How does the number of chromosomes in a grasshopper’s sex cells compare to the number in its body cells?
- 5. The sex cells have exactly half the number of chromosomes as the body cells. Body Cells – 24 Sex Cells - ?
- 6. 3 What role do chromosomes play in inheritance?
- 7. Genes are carried from parents to their offspring on chromosomes.
- 9. 4 What is MEIOSIS?
- 10. MEIOSIS is the process where the number of chromosomes is reduced by half.
- 12. 5 What type of cells form by meiosis?
- 13. Sex Cells Sperm & Eggs
- 14. 6 What events occur during meiosis?
- 15. MEIOSIS BEGINS– Chromosomes copied MEIOSIS I – Chromosomes pair up and two cells form with ½ the number of chromosomes.
- 16. 3. MEIOSIS II – Double rods split and move to ends of the cell. 4. END OF MEIOSIS – Four sex cells have been produced with ½ the number of chromosomes.
- 18. 7 How is a Punnett square a model for what happens during meiosis?
- 19. XX It shows how the alleles separate to form all the possible sex cells. X Y X X XX XY XY
- 20. 8 How many chromosomes does a human body cell contain?
- 21. 46
- 22. 9 On what structures in a cell are genes located?
- 23. Genes are located on chromosomes.
- 24. 10 The body cells of hamsters have 44 chromosomes. How many chromosomes would the sex cells of a hamster have?
- 25. 22 chromosomes
- 26. The End