PPT-Meiosis (Gametogenesis) KEY CONCEPT

Gametes have half the number of chromosomes that body cells have You have body cells and gametes Body cells are also called somatic cells Germ cells develop into gametes Germ cells are located in the ovaries and testes. 11.4.1. Germinal epithelium cells (spermatogonium). Sertoli cell. Developing spermatozoa. spermatids. Leydig cell. Each time a spermatogonium divides it may either undergo mitosis, to maintain the number of spermatogonia, or spermatogenesis.. Sexual Life Cycles. Which of the following transmits genes from both parents to child, or from one generation of a family to another?. DNA. gametes. somatic cells. mitosis. nucleotides. Which of the following transmits genes from both parents to child, or from one generation of a family to another?. 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?. Genetic Recombination. 1. Meiosis. Mitosis – asexual reproduction. Meiosis – sexual reproduction. Mitosis – 2 identical cells. Meiosis – 4 unique sex cells (sperm/eggs). 2. Meiosis. The . form of . Key Concepts:. What happens during the process of meiosis?. How is meiosis different from mitosis?. Types of . Reproduction. Section 11-4. ASEXUAL. SEXUAL. 1. One Parent. 2. Binary fission (in prokaryotes) or mitosis in (eukaryotes).. 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 6.1 Chromosomes and Meiosis. Cells can be divided into 2 major groups:. Somatic (body): most of body tissue and organs. Germ: found in reproductive organs, develop into gametes. Gametes are sex cells – ova (eggs) & spermatozoa (sperm). Meiosis is the. . type of . cell division by which . germ cells . (eggs and sperm) . are produced. . One parent cell produces . four . daughter cells. . Daughter cells have half the number of chromosomes found in the parent cell. The cell cycle extends from the "birth " of a cell , resulting from cell reproduction , to the time the cell itself divides in two.. . The eukaryotic cell cycle. Mitosis :-. All living cells arise from pre-existing living cells.. and Fertilization Barry Bean for BioS 90 & 95 12 September 2008 Life is short. Especially if you’re a sperm cell! Used with permission of the artist, Patrick Moberg Try to remember… when you 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 . Defined. : Gametes from two separate parents unite. Meiosis: Diploid (2n) to haploid (n) cells . Mechanism that allows for . genetic diversity. Many eukaryotes reproduce in this manner. Plants, animals and fungi. . 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 .