PPT-Gametogenesis Reproduction in vertebrates is by sexual means involving haploid (1N) germ

Ovum female component Spermatozoa male component Both arise through meiosis cell division where each daughter cell receives ½ genetic material from original cell Primordial germ cells derived from . ABBOTTS COLLEGE. ABBOTTS. 1. TOPICS. 2. DEFINITIONS. Alternation of generations. Haploid. diploid. LIFE CYCLES OF:. Moss. A flower. PAGE 2.3.4. Asexual and sexual reproduction. Asexual . Sexual. Produces genetically identical organisms. LECA=last eukaryotic common ancestor as distinct from LUCA (last universal com. . a. nc.). Probably had the ability to reproduce sexually…how do we know this??. Transition to a sexual LECA involved 4 and we will focus on 3 “transitions. Types. of Reproduction. Advantages. Disadvantages. Sexual. Asexual. Allows for genetic . variation. Can result in better species. Requires . partner. Does not . require. . partner. Generally . faster. 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 Samantha Bonilla. Vocabulary. •. Karyotype. . •. Somatic cell. •. . Life cycle. •. . Homologous chromosome. •. . S. ex chromosome. •. . Autosome. •. . Diploid cell. •. . Haploid cell. Organisms that reproduce sexually are generally diploid: each cell contains two sets of chromosomes—a maternal chromosome set and a paternal chromosome set—one inherited from each parent. . . Google Images. Hekmat. El-. Gammal. 2018. Lecture 3. Lecture Objectives. On completion of this lecture, students will be able to:. Define the origin of primordial germ cells. . Understand common path of . gametogenesis. Vocabulary. Somatic Cell. Gamete. Homologous Chromosomes. Diploid Cells ( 2n ). Haploid Cells ( n ). Normal body cell. Sex cell – sperm or egg. Matching pairs of chromosomes. Cells that have homologous chromosomes (somatic cells). The main characteristics of . Phaeophyta. . are:. 1- . Cell construction:. . cellulose fibers . bound with . Alginic. . acid . , . Fucoidan. . . form . cell walls.. 2- Food reserves:. . laminarin. Cell division / Asexual reproduction. Mitosis. produce cells with same information. identical daughter cells. exact copies. clones. same amount of DNA . same number of chromosomes. same genetic information. These evidences are based on the . comparative study of the embryos. . of various animals.. Von Baer. noticed . remarkable similarities. among . vertebrate embryos. , however, their adults were quite different.. Subject Code – . 17UMBA31. Semester – . I. V. Programme. - . B.Sc. Microbiology. . Ms.Musbira. . banu. . M. Assistant professor . Department of Microbiology. HKRH College. 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 . . Conversion of Germ Cells into Male and Female Gametes. Dr. . Ruqaya. . Alsmak. Senior Embryologist. Ibn-. Sina. University of Medical and Pharmaceutical Sciences. Primordial Germ Cells. Development begins with .