PPT-Meiosis: going from diploid

to haploid Making Gametes Egg and Sperm The cell cycle remains the same except G1 S G2 Division meiosis amp cytokinesis Meiosis Overview Process of nuclear division that reduces the number of chromosomes in new cells to . Organisms that reproduce sexually have specialized cells called gametes (sex cells). Gametes are the result of a type of cell division called meiosis. Diploid and haploid. Almost all human cells are . Chromosome number. Phases of meiosis. Meiosis and genetics. Gamete formation. Comparing mitosis and meiosis. Chromosome number. A cell in adult . drosphilia. (fruit fly) has 8 chromosomes, 4 of which came from the fly’s male parent, and 4 of which came from the fly’s female parent.. 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?. 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).. 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 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. Haploid. Chromosome. Chromatid. Chromatin. Crossing Over. Tetrad. Gene –A segment of genetic information on a chromosome. Codes for a specific . characteristic. Allele – A specific form of a gene. Where do you come from?. Sex: . Woman, XX. . Man, XY. Gender: Female Male. . Egg, Ovum Sperm. Fertilization – union of sperm an egg to produce zygote . Parthenogenesis . is a type of asexual reproduction in which a female gamete or egg cell develops into an individual without fertilization.. or. Parthenogenesi. s is defined as unfertilized ovum development without fertilization.. 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.. Necessary only for sexual reproduction. Sister separate Sister chromatids remain attached Pairs of homologous chromosomes split up Chromosomes duplicate Homologous chromosomes (red and blue) pair and 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.