PPT-11.4 Meiosis Vocabulary: Homologous, diploid, haploid, meiosis, tetrad, crossing-over

Key Concepts What happens during the process of meiosis How is meiosis different from mitosis Types of Reproduction Section 114 ASEXUAL SEXUAL 1 One Parent 2 Binary fission in prokaryotes or mitosis in eukaryotes. Organisms that reproduce sexually have specialized cells called gametes (sex cells). Gametes are the result of a type of cell division called meiosis. Diploid and haploid. Almost all human cells are . Each organism must inherit a single copy of every gene from each of its “parents.”. Gametes. are formed by a process that separates the two sets of genes so that each gamete ends up with just one set.. Take out a piece of paper and write for two minutes what makes you unique . . Human. Cat. Shrimp. Bean. Before Meiosis. Chromosome. number (haploid or diploid?. 46. ?. ?. ?. Number of pairs of homologous. TETRAD ANALYSIS. To study the Segregation of chromosomes & Genes during meiosis using tetrad . ORDERED TETRAD DATA. Studied in bread mould :fungus . Neurospora. . crassa. ASCUS : Individual Haploid Product of meiosis in linear cylindrical structure in their order form . Alleles segregate during meiosis allowing new combinations to be formed by the fusion of gametes. . Understandings:. One diploid nucleus divides by meiosis to produce four haploid nuclei. . The halving of the chromosome number allows a sexual life cycle with fusion of gametes. . Cells Alive- . http://. cellsalive.com/meiosis.htm. . Meiosis animation. http://. www.youtube.com/watch?v=kVMb4Js99tA. . Meiosis Practice Test. Answer the following questions on the back of your review sheet.. 10.2 – Meiosis Sexual Reproduction Function: creates gametes (sperm, egg, pollen) for sexual reproduction . Meiosis: Cell division for sexual reproduction. Males - testes Females - ovaries Sex Cells Parthenogenesis . is a type of asexual reproduction in which a female gamete or egg cell develops into an individual without fertilization.. or. Parthenogenesi. s is defined as unfertilized ovum development without fertilization.. Interphase. Cytokinesis. Telophase. Anaphase. Metaphase. Prophase. Mitosis. Meiosis. What looks similar between mitosis and meiosis?. What looks different?. Vocabulary- Meiosis. Process of reduction . Essential questions:. What kind of cell divide by mitosis? . 2. . How is the ploidy of these cells? . 3. . What kind of cell divide by meiosis. ?. . 4. How is the ploidy of these cells? . 5. . Where does meiosis division take place? . 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 Necessary only for sexual reproduction. Sister separate Sister chromatids remain attached Pairs of homologous chromosomes split up Chromosomes duplicate Homologous chromosomes (red and blue) pair and Gametes. are formed by a process that separates the two sets of genes so that each gamete ends up with just one set.. Chromosome Number. All organisms have different numbers of chromosomes.. A body cell in an adult fruit fly has 8 chromosomes: 4 from the fruit fly's male parent, and 4 from its female parent.. In asexual reproduction, a single individual gives rise to offspring that are identical to itself and . others [MITOSIS]. Bacteria reproduce asexually. Most plants and some simple animals can reproduce both asexually and .