Solved by a verified expert:The title is Lab 11: Mitosis & Meiosis Following chromosomes DNA Movement.This lab includes:*1/Experiment 2: Mitosis Beads Diagram (needs to be filled in).* 3 Post-Lab questions (needs to be answered)All the information is available via attachmentMaterials2 Sets of Different Colored Pop-it® Beads (32 ofeach – these may be any color)(4) 5-Holed Pop-it® Beads (used as centromeres)Procedure:MitosisGenetic content is replicated during interphase. DNA exists as loose molecular strands called chromatin; it hasnot condensed to form chromosomes yet.Sister chromatids begin coiling into chromosomes during prophase. Begin your experiment here:1. Build a pair of replicated, homologous chromosomes. 10 beads should be used to create eachindividual sister chromatid (20 beads per chromosome pair). The five-holed bead represents thecentromere. To do this…a. Start with 20 red beads to create your first sisterchromatid pair. Five beads must be snapped together foreach of the four different strands. Two strands createthe first chromatid, and two strands create the secondchromatid.b. Place the five-holed bead flat on a work surface with thenode positioned up. Then, snap each of the four strandsinto the bead to create an "X" shaped pair of sisterchromosomes.c. Repeat this process using 20 new beads (of a differentcolor) to create the second sister chromatid pair. SeeFigure 6 for reference.Figure 6: Bead set-up. The blue beadsrepresent one pair of sister chromatidsand the red beads represent a secondpair of sister chromatids.2. Assemble a second pair of replicated sister chromatids; thistime using 12 beads, instead of 20, per pair (six beads per each complete sister chromatid strand). Snapeach of the four pieces into a new five-holed bead to complete the set up.© 2013 eScience Labs, LLC.All Rights Reserved 3. Repeat this process using 12 new beads (of a different color) to create the second set of sisterchromatids. See Figure 7 for reference.4. Configure the chromosomes as they would appear in each of the stages of the cell cycle (prophase,metaphase, anaphase, telophase, and cytokinesis). Diagram the images for each stage in the sectiontitled "Cell Cycle Division: Mitosis Beads Diagram". Be sure to indicate the number of chromosomespresent in each cell for each phase.Cell Cycle Division: Mitosis Beads Diagram:ProphaseMetaphaseAnaphaseFigure 7: Second set of replicatedchromosomes.TelophaseCytokinesis1. Why are chromosomes important? What information do they provide?2. How many chromosomes did each of your daughter cells contain?3. How often do human skin cells divide? Why might that be? Compare this rate to how frequentlyhuman neurons divide. What do you notice?© 2013 eScience Labs, LLC.All Rights Reserved
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