PPT-A: haploid B: diploid

Unique to A Common to both Unique to B 1n 1 set of chromosomes Sex cells eggs sperm Set of chromosomes Contain a full set of the DNA 2n 2sets of chromosomes n pairs or 2n chromosomes. 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 . . . ‘No fertilization’ :. HISTORY OF PARTHENOGENESIS:. Parthenogenesis was first recognized in 1745 by CHARLES BONNET {SWISS,1720-1793}.. JACQUES LOEB {German,1859-1924} stimulated parthenogenesis in sea urchin and frog eggs by artificial means in 1900.. Larry Bull. UWE. SEX. . A Social Interaction in Complex Intelligent Systems . Evolutionary Computing. Nature. Hug et al. (2016) A new view of the tree of life. . Nature Microbiology. Bacteria. Conjugation :. Sexual Life Cycles. modes of reproduction. diploid/haploid and meiosis. meiosis I and meiosis II phases. key differences between mitosis and meiosis. variation in position of meiosis in life cycles. why sex?. Larry Bull. UWE. Larry Bull. UWE. SEX. . A Social Interaction in Complex Intelligent Systems . Evolutionary Computing. F = . f. (A). F’ = . f. (A’). Nature. Hug et al. (2016) A new view of the tree of life. . Types. of Reproduction. Advantages. Disadvantages. Sexual. Asexual. Allows for genetic . variation. Can result in better species. Requires . partner. Does not . require. . partner. Generally . faster. th. , 2017. Pre-Class:. Briefly. summarize the events of the six steps of mitosis/cytokinesis.. . Expect . the Wheel of Doom!. Have your free response questions ready but . don’t. discuss them.. 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.. Primarily terrestrial. Filamentous. __________. Coenocytic (aseptate). septate. mycelium. Haustoria. – specialized parasitic hyphae. Fungal Hyphae. General Characteristics. (animal-like). Heterotrophic. The main characteristics of . Phaeophyta. . are:. 1- . Cell construction:. . cellulose fibers . bound with . Alginic. . acid . , . Fucoidan. . . form . cell walls.. 2- Food reserves:. . laminarin. algae). The main characteristics of . Phaeophyta. . are:. 1- Cell construction: cellulose fibers bound with . alginic. acid form cell walls.. 2- Food reserves:. . laminarin. , a soluble polysaccharide, and . 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 Essential Idea: . Meiosis produces genetically-varied, haploid cells needed for sexual reproduction. 3.3.1 One diploid nucleus divides by meiosis to produce four haploid nuclei. Meiosis. . is a process that divides . to . haploid. Making . Gametes. : Egg and Sperm. The cell cycle remains the same except…. . G1. S. G2. Division: . meiosis. . & cytokinesis. Meiosis Overview. Process of nuclear division that reduces the number of chromosomes in new cells to .