PPT-A Reduction Division to Produce Gametes Which Ultimately Ma

Part 1 Meiosis Types of Cell Division There are two types of normal cell division mitosis and meiosis Both types of cell division take place in eukaryotic organisms Mitosis is cell division which begins in . (Body Cells). (Sex Cells). Examples of . somatic (body) cells:. spleen, kidney, eyeball. . The DNA in these cells are NOT passed on to your offspring!. Examples of . gametes (sex cells): . ova/egg and sperm. a/a – a is the allele and / represents the two chromatids – there are two alleles for a diploid organism. a b/a b – two different genes on the same chromosome. a/a ; b/b – two different genes on different chromosomes ; designated separate chromosomes. Meiosis. Meiosis is the cell division which produces the . sex cells . or . gametes. .. Meiosis occurs in the cells of the . reproductive organs. :. Sperm cells – testes. Ova (eggs) – ovaries. Pollen - anthers. 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. gametes. Meiosis produces gametes. . Meiosis was first observed by the Belgian cytologist Pierre-Joseph van Beneden in 1887. 60 years before we knew that DNA contained the genetic material. Gametes. Chapter 13. Alleles and Traits. Blending . inheritance. Example: Black and white horse will produce . _________offspring. Failed to explain how traits disappear over several generations and then . _________________unaltered . CfE Advanced Higher Biology. Unit 2: Organisms and Evolution. 2bii. – Meiosis forms variable gametes. Terminology (4). Sexual life cycle of animals (1). Meiosis – an overview (1). Meiosis I (4). Hermaphrodite. . Parent. genotype. Male Parent. genotype. X. Male gametes. Female gametes. Progeny genotype. Which progeny are you continuing with? Why?. Progeny phenotypes. and ratios. Hermaphrodite. 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. . “The Revelation”. Debrief. ATOTC . essays . For next class…. P. ROMPT #1. The opening lines of . A Tale of Two Cities . are some of the most famous in British literature. They introduce the contradictions in the world of the novel, between positive and negative forces: “light and darkness, wisdom and foolishness, hope and despair,” and so on.. Capital . letters used for dominant allele. lowercase of . the same letter . used . for . recessive. ex. round . seeds are dominant over wrinkled.. R = . round, r . = . wrinkled. Genotype. . the . alleles for an . Euglenophyta. , . Bacillariophyta. , and . Dinoflagellata. consist entirely of unicellular forms. . Other Divisions, especially the . Phaeophyta. and . Rhodophyta. consist almost entirely of . multicellular. 2/24/16. Update Your Table of Contents!. Page 16 – Intro. To Genetics Guided Reading. Page 17 – Mendel, Somatic Cells, and Gametes. Organisms that reproduce . sexually . are made up of two different types of cells.. to an interest in microscopy. During his life, Leeuwenhoek assembled more than 250 icroscopes, some of which magnified objects 270 times. Through magnification, he discovered presence of “micro&#