PPT-Prophase

Metaphase Anaphase INTERPHASE G1 phase Metabolic changes prepare the cell for division At a certain point the restriction point the cell is committed to division and moves into the S phase. W Bass Department of Biological Science Florida State University Tallahassee Florida 323064370 USA ax 1 850 644 0481 email bassbiofsuedu Abstract elomeres carry out conserved and possibly ancient functions in meiosis During the specialized prophase Dr. . Debbie Payne, Ruth H. Liddell, Shirley K. Scarbrough. Alabama State University, Math, Science Partnership, . Summer 2013. CROSSING OVER. When does it occur?. Why is it important?. Meiosis in Lily. What are the phases of mitosis and what happens during each phase?. What is the significance of mitosis to asexual reproduction?. Mitosis. Cell division. Cell Cycle. Cell division. : process by which cells . The membrane pinches together until two cells are formed.. The membrane pinches together until two cells are formed.. Cytokinesis. Sister . chromatids. each become a chromosome. Sister . chromatids. Prophase I. DNA condenses and chromosomes become visible. Homologous chromosomes are attracted to each other and so pair up. Due to similar chromosome structure and allele alignment, . crossing over occurs. 10. Meiosis. You Must Know. The importance of homologues chromosomes to meiosis.. How the chromosome number is reduced from diploid to haploid in meiosis.. Three events that occur in meiosis but not mitosis.. Meiosis . MEIOSIS. The production of offspring by sexual reproduction includes the fusion of two gametes, each with a complete haploid set of chromosomes. . Gametes are formed from specialised diploid cells. This specialised kind of cell division that reduces the chromosome number by half results in the production of haploid daughter cells. This kind of division is called . Cell cycle. G1 phase: Growth, cytokinesis finishes , protein synthesis, prepares to copy DNA. S phase: DNA copies itself. G2: protein synthesis continues prepares to divide. M Mitosis Nucleus divides perfectly. Principles of Biology. Biology 1110 Laboratory. Laboratory . # 9 . The Cell Cycle and Mitosis. Support/Review Materials. All of the micrographs in this presentation were photographed in the . MnWest. Prophase. Prophase. Prophase. Prophase. Metaphase. Metaphase. Metaphase. Anaphase. Anaphase. Anaphase. Telophase. Cytokinesis. Cytokinesis. Get a sheet of paper and . number . 1-29. Answer are on the last slide. 1. were . credited for finding the structure of DNA. Chargaff. Franklin. Watson . & . Crick. 2. What phase of Mitosis is this?. Telophase I and Cytokinesis Prophase II Metaphase II Anaphase II Telophase II and Cytokinesis Centrosome (with centriole pair) Sister chromatids Chiasmata Spindle Fragments of nuclear envelope Centrom Acknowledgement. I would like to express special thank of gratitude to our respected principal madam, Mrs. . Kuljit. . Kaur. , for giving us this unique opportunity to express ourselves in a creative way. . Dr. . . Samer. . Alnussairi. Objectives. Oogenesis. (. prenatal . & . postnatal). Ovulation. . In . preparation . for. . fertilization,. Germ cells. . undergo. Gametogenesis . (include. .