Chapter 7 Section 1 (Starts on 144) 1. What types of cells are haploid? __________________________________ 2. What type of cells does meiosis produce? _______________________________ 3. How many divisions occur in meiosis? __________________________________ 4. Since meiosis is a form of cell division, what must occur before meiosis begins? 5. In what phase of meiosis, does crossing-over occur? 6. What three mechanisms make key contributions to genetic variation? a. _____________________________________________ b. _____________________________________________ c. _____________________________________________ 7. What is independent assortment? 8. Where does spermatogenesis occur? __________________________________ 9. Where does oogenesis occur? __________________________________ 10. What is another name for an egg cell? ________________________ 11. The ovum tends to get a larger share of cytoplasm than the polar body. Why is this important to the cell? Chapter 7 Section 2 (Starts on 150) 1. Identify the following statements as sexual or asexual reproduction: a. ___________________ Genetically identical b. ___________________ Reproductive cells must be produced c. ___________________ Two parents d. ___________________ One parent e. ___________________ Binary fission is an example f. ___________________ Most primitive reproduction g. ___________________ Can repair DNA damage h. ___________________ Budding is an example i. ___________________ Offspring is not exactly like parents j. ___________________ No fusion of haploid cells k. ___________________ Haploid gametes join to form diploid zygote l. ___________________ Produces many offspring in short time m. ___________________ Cloning is an example n. ___________________ Fragmentation is an example 2. Why is having DNA with very little variation a disadvantage to a species? 3. Goto page 153 - Exploring Further a. What is parthenogenesis? b. In parthenogenesis, which parent is the offspring a clone of? ____________________________ c. What four organisms can reproduce by parthenogenesis? i. ____________________________ ii. ____________________________ iii. ____________________________ iv. ____________________________ d. Can parthenogenesis, occur in mammals? __________________