Chapter 6 Test Review Chromosomes • • • • • • • • • 1. nucleus 2. chromatids 3. centromere 4. chromosomes not directly involved in determining sex 5. 1 pair, determine the sex, XX=female, XY=male 6. a photo of the chromosomes in a dividing cell that show the chromosomes arranged by size 7. 2 sets of chromosomes 8. 1 set of chromosomes 9. see board Cell Cycle • 1. a repeating sequence of cellular growth and division during the life of an organism • 2. G1, S, G2, mitosis, cytokinesis • 3. interphase • 4. to make sure the cells are healthy and properly developed (the right size and the correct genetic material) • 5. uncontrolled cell division Mitosis • • • • • • 1. 2. 3. 4. 5. 6. DNA coils to form chromosomes. 46 metaphase centrioles prophase, metaphase, anaphase, telophase To make an exact copy of the nucleus for: – A. Asexual reproduction – B. Growth – C. Repair/healing Asexual Reproduction • 1. Reproduction involving 1 parent. Offspring have identical DNA. • 2. budding, regeneration, sporulation, vegetative propagation, • Binary fission- in bacteria (They are prokaryotes and do not have a nucleus, so they do not do mitosis.)