pre lab questions - Yes Failure of chromosomes to move to...

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Andrew Platt Bio Lab-Tuesday at 3:30 General Biology I Laboratory Five Mitosis & Meiosis Pre-Lab Activities 1. What types of cells undergo mitosis? What types of cells undergo meiosis? Germ-line cells undergo meiosis. Somatic cells undergo mitosis. 2. Name the 5 phases of the cell cycle. G 1 (gap phase) S (synthesis) G 2 (gap phase 2)-organelles are replicating Mitosis-5 steps Cytokinesis-division of cell into 2 G1, s and g2 is interphase. G0-a resting phase. 3. List the 5 stages of Mitosis? Prophase Prometaphase Metaphase Anaphase Telophase 4. What is the most obvious distinction between mitosis and meiosis? The most obvious distinction between mitosis and meiosis involves two successive divisions with no replication of genetic material between them. Mitosis-2 identical diploid cells Meiosis-4 haploid daughter cells, 2 nuclear divisions, no dna replication. 5. Are there any disadvantage to the process of meiosis? If so, what are they?
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Unformatted text preview: Yes, Failure of chromosomes to move to opposite poles during either meiotic division is called nondisjunction, and it produces one gamete that lacks a chromosome and one that has two copies. Andrew Platt Bio Lab-Tuesday at 3:30 Gametes with and improper number of number of chromosomes are called aneuploid gametes. In humans, this is the most common cause of spontaneous abortion. Genetic disorder. Non-disjunction Vocab-Centromeres Chromatids Chromosomes-Carriers genetic information Crossing Over-occurs of meiosis, exchange in genetic information Diploid-2 sets of chromosomes, or 2n diploid cell Haploid-1 set of chromosome, n Homologous chromosomes-a pair of the same kind of chromosomes in a diploid cell. Sister Chromatids-One of 2 copies of each chromosome. Synapses-point by point alignment of Quiz identify cell by picture...
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