AP Biology Mitosis & Meiosis Labs Natalia Sivackova
BACKGROUND INFORMATION Processes of cell division 2 types Mitosis: parent cell produces two “daughter” cells that are genetically identical Meiosis: parent cells divide and produce the gametes that give rise to new individuals
LAB 1 “Study the process of mitosis using slides of onion root tips or whitefish blastulae”
Cell Cycle Process called karyokinesis: Prophase Metaphase Anaphase Telophase Process called cytokinesis
Interphase Prophase Metaphase Anaphase Telophase Cytokinesis
Homologous Chromosomes What genome is composed of Similar but not identical Carries same genes in same order But alleles for each trait might not be the same
Synapsis Crossing over (prophase 1) Come together Sections are exchanged Both parents
LAB 2 “Observing the crossing over in a fungus Sordania”
Meiosis occurs in haploid ascospores Produces spores of different colors Fertilization occurs when growing filaments meet Zygotes form Meiosis occurs in haploid ascospores
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Sources: http://www.phschool.com/science/biology_place/labbench /lab3/spores2.html (pictures, labs, and information)