Unit 5 Mitosis, Meiosis and cell regulation. Chapters 12-13, 19 in Red Book Chapters 8 and 11 in Green Book Chapter 8 (Red book) Vocabulary Binary fission Chromatin Chromosome Genome Diploid Haploid Gamete Somatic cell Genome Centromere Gene Sister chromatid Mitosis Cytokinesis Cell cycle G1 phase G2 phase S phase Interphase prophase metaphase Anaphase telophase spindle fibers Centrioles cancer malignant tumor Metastasis benign tumor contact inhibition Cleavage furrow cell plate Density dependent inhibition Cyclin anchorage dependence Cdks MPF cell cycle checkpoint G0 phase homologous chromosomes synapsis life cycle Tetrad crossing over chiasmata Alternation of generations zygote karyotyping Locus sex chromosomes parthenogenesis Budding genetic recombination nondisjunction Karyotype chromosomal mutation gene mutation Meiosis asexual reproduction sexual reproduction Autosomes sex chromosomes gene mapping Describe the many differences and similarities between mitosis and meiosis. What is the significance of meiosis in the big picture? Mitosis? Discuss the advantages and disadvantages of asexual and sexual reproduction. What are the four sources for genetic variation in a population? Why is this important? Be able to explain the basic life cycle plan of fungi, animals, and plants. How does cytokinesis differ for plant cells and animal cells? List the stages and substages of the cell cycle and what occurs in each stage using important terminology. How does mitosis provide continuity and ability to change at the same time? Differentiate “big” chromosomes, “small (single stranded)” chromosomes, chromatids, and chromatin. Know the number of chromosomes at any point in the cell cycle for humans for meiosis or mitosis Understand the checkpoints in the cell cycle and how they can lead to cancer when faulty (red book) Be able to list and explain the types of chromosomal mutations. Chapter 11 (red book) Vocabulary Stem cells Embryonic stem cells Operon Promoter RNA polymerase Enhancers Introns Euchromatin histones homeotic gene Oncogene P53 gene Carcinogen G protein Transcription Blastocyst Therapeutic cloning adult stem cells lac operon (inducible) operator repressor 5’ GTP cap exons heterochromatin nucleosomes homeobox Protooncogene DNA methylation BRCA genes 1 and 2 signal transduction pathway translation barr body Reproductive cloning differentiation trp operon (repressible) TATA box transcription factors 3’ poly A tail histones X chromosome inactivation alternative RNA splicing ras gene Tumor supressor gene Histone acetylation protein kinase tumor gene expression Be able to relate what stem cells are and the differences between the types of cloning and the types of stem cells Be able to explain the lac operon and trp operon and their overall goal. Be able to explain the three post-transcriptional modifications of eukaryotic cells. Be able to explain the two mechanisms for how the signal transduction pathways can lead to cancer (224) Be able to explain the multiple steps needed for colon cancer development and what polyps indicate in the colon. (225) How do eukaryotic organisms control transcription through the use of enhancers and transcription factors? Be able to explain the four mechanisms for translational and post-translational control Describe the series of events of how an animal embryo develops as it relates to cell to cell signaling, homeobox, homeotic genes (220-2) Reading guide pages 208-209, 212-214 1. What are the differences between therapeutic and reproductive cloning? 2. What are the differences between embryonic and adult stem cells? 3. How do the following terms relate to stem cells and cloning? a. Blastocyst 4. b. Differentiation c. Culture conditions d. Dolly e. Nuclear transplantation f. Surrogate mother How does our body make an entire body from the fertilized egg considering that all cells have the same DNA? Write three statements that would help explain this. Reading pages 210-211, 215-219 5. Describe the lac operon and why it is called the inducible operon. 6. Trp operon is a repressible operon although it has the same “parts” as in the lac operon story. What is different in the trp operon in the story itself and the result of the story? 7. How do eukaryotic cells control transcription via DNA packaging? 8. If the tightly packaged chromatin regions are called heterochromatin and the loosely packaged version is called euchromatin, which is likely to be transcribed and why does this make sense? 9. X inactivation leads to the formation of a Barr Body (inactivated X chromosome) in each cell. How does this lead to a tortoise shell or calico cat? Read pages 220-222 10. Describe the series of events of how an animal embryo develops as it relates to cell to cell signaling, homeobox, homeotic genes.