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Class Presentation Questions for CH 11-4 Meiosis 1. What two “things” did Mendel’s principles of genetics require? 2. ____________________ is a term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent. 3. A cell that contains BOTH sets of chromosomes is said to be ______________ which means “__________________”. This number is represented by 2N. 4. ________________ cells contain two complete sets of chromosomes and two complete sets of genes. 5. _______________ is a term used to refer to a cell that contains only a SINGLE set of chromosomes & therefore only a single set of genes. It is represented by the symbol N. 6. What is meiosis? 7. The Diploid (2N) number for the fruit fly=_________; The Haploid (N) number for the fruit fly= _________________. 8. Meiosis usually involves two distinct divisions called ____________________ & ___________________-. 9. The number of chromosomes in a gamete is represented by the symbol_________. 10. If an organisms diploid # is 46, what is its haploid #? 11. An organism’s gametes have ___________________ the number of chromosomes found in the body cells. 12. _________________ are produced as a result of meiosis. 13. Gametes have ______________ allele for each gene. 14. Define crossing over. 15. Crossing-over occurs during the stage of meiosis called _________________. 16. What happens to the # of chromosomes per cell during meiosis? 17. List the major differences between mitosis and meiosis. 18. Meiosis produces ___________ sperm cells that are genetically DIFFERENT. In females what is the end result of meiosis? 19. What might happen if the gametes of a species had the same # of chromosomes as the species’ body cells? 20. Explain why the daughter cells produced by meiosis are genetically different from each other, whereas the daughter cells produced by mitosis are not.