PPT-Meiosis

Homologous chromosomes identical chromosomes same length centromere same staining pattern exceptionmales sex chromosome 122 autosomes sex chromsomes Homologous chromosomes. 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. 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.. http://www.youtube.com/watch?v=lJzZ7p-47P8&feature=related. . State that meiosis is a reduction division of a diploid nucleus to form a haploid . nulcei. .. Define homologous chromosomes. Outline the process of meiosis, including pairing of homologous chromosomes and crossing over, followed by two divisions, which . (making sperm and eggs…). We. ’. re NOT talking about making babies, we. ’. re talking about making the CELLS that make babies – eggs and sperm! . Eggs and sperm are GAMETES.. Gamete = sex cells (. Reduction Division. Mike Clark, M.D.. Meiosis. Meiosis is nicknamed reduction division. It is a process where a cell divides (division) but reduces the genetic material to ½ (reduction) . This type of cell division occurs in the gametes (sex cells). IB Biology. Cell Cycle. Mitosis. Prophase . Metaphase. Anaphase. Telophase. Lung Cancer. Meiosis. Mitosis vs. Meiosis. Crossover . Karyotype. Trisomy. Monosomy. 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. Chapter 13. Vocabulary. heredity. variation. gene. gamete. somatic cell. asexual . vs. sexual reproduction. autosomes. sex chromosomes. allele. dominant . vs. recessive. diploid . vs. haploid. parental generation. Chapter 8. Asexual vs. Sexual reproduction. Asexual reproduction – new organisms/cells are genetically identical to parent cells/organisms . Sexual reproduction – offspring have a combination of genes from both parents. . Image from about.com . meiosis_metaphase_1.jpg. . Mutations. (changes in an organism’s DNA) are the . original. . source of . all. genetic variation. Mutations create different versions of genes called . Mrs. Stewart. Biology I . Stewarts Creek High School. Objectives:. Differentiate between the process of mitosis and meiosis. Demonstrate the movement of chromosomes throughout meiosis. Analyze how meiosis leads to genetic variation. Suppose that the . anole lizard has . fifty-two. chromosomes in the nucleus of its body or somatic cells. How many chromosomes will be in the . unfertilized. . egg. of . an anole lizard. ?. 1. 13. 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.. DON. ’. T EAT THE CANDY!!!!!! . Yet. Om nom nom.. Lab Procedure. You will be doing a lab which will take you through the phases of . Meiosis, using the candy as parts of the cell!. ! . What are the phases of Meiosis?.