PDF-Meiosis and crossing over pairing and separating Meiosis separates

These phenomena observed in Saccharomyces cerevisiae are highly conserved in eukaryotes thus rendering yeast which is easy to use an essential model organism Researchers identified and studied fun. 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 . Each organism must inherit a single copy of every gene from each of its “parents.”. Gametes. are formed by a process that separates the two sets of genes so that each gamete ends up with just one set.. 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. Chapter 13. Vocabulary. heredity. variation. gene. gamete. somatic cell. asexual . vs. sexual reproduction. autosomes. sex chromosomes. allele. dominant . vs. recessive. diploid . vs. haploid. parental generation. 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. . Suppose that the . anole lizard has . fifty-two. chromosomes in the nucleus of its body or somatic cells. How many chromosomes will be in the . unfertilized. . egg. of . an anole lizard. ?. 1. 13. 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 . 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! . 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 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 ): 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. Gametes. are formed by a process that separates the two sets of genes so that each gamete ends up with just one set.. Chromosome Number. All organisms have different numbers of chromosomes.. A body cell in an adult fruit fly has 8 chromosomes: 4 from the fruit fly's male parent, and 4 from its female parent..