PPT-Meiosis The formation of gametes (sex cells)

Meiosis The formation of gametes sex cells Some Vocab Haploid n one set of chromosomes Reproductive cells are haploid 23 Chromosomes in humans Eggs Sperm Diploid 2n . (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. 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. 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). 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. . Not all cells in the organism reproduce through mitosis. If the organism reproduces sexually, then it needs special cells. Gametes = egg or sperm cells. Meiosis. Meiosis. Type of cell division by which gametes (eggs and sperm) are produced.. Cell . Division. &. OUTCOME QUESTION(S):. S1-1-05:. What role do gametes play in reproduction?. Vocabulary & . Concepts.   . Genetic Diversity. Gamete Diploid Haploid . Meiosis . Homologous pair . Before we start genetics, let's review the process of what makes us all look different compared to our siblings, family, and classmates!. Sexual Reproduction. Sexual reproduction creates genetic variability. That is why we all look different and you look different from your siblings! . 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 Meiosis (Ch 11.4) Background Chromosome = package form of DNA in a cell Genes = genetically inherited traits Genes normally have two alleles per gene (there are some exceptions like ABO blood type) 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.. . Human. Cat. Shrimp. Bean. Before Meiosis. Chromosome. number (haploid or diploid?. 46. ?. ?. ?. Number of pairs of homologous. chromosomes. 23. ?. 127. ?. After Meiosis I. Chromosome number (haploid or diploid?). 1. 2. Sexual Reproduction. . Involves the production of sex cells (gametes) and the fusion of their nuclei (fertilization), producing a fertilized egg cell (zygote). Gametes. Fertilization. 3.