I can\'t figure out why I am using 64 beads and when we divide that in half for

Question

I can't figure out why I am using 64 beads and when we divide that in half for cytokinesis we get 32 beads per daughter cell. How do i get the 23 chromosomes per dauter cell?

Although mitosis and meiosis share similarities, they are different processes and create very different results. In this experiment, you will follow the movement of chromosomes through mitosis to create somatic daughter cells. Materials 2 Sets of Different Colored Pop-it8 Beads (32 of each -these may be any color) (8) 5-Holed Pop-it Beads (used as centromeres) Procedure Genetic content is replicated during interphase. DNA exists as loose molecular strands called chromatin it has not 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. Use ten beads to create each individual sister chromatid (20 beads per chromosome pair). Two five-holed beads represent each centromere. To do this: a. Start with 20 beads of one color to create your first sister chromatid pair. Five beads must be snapped together for each of the four different strands. Two strands create the first chromatid, and strands create the second chromatid. Figure 5: Beod ser-up. The blue beods represent ane pair of sister chromatids and the black beads represent a second pair of sister chromatids. The black and biue poir are homologous second b. Place one five-holed bead flat on a ed bead flat on work surface with the node positioned up. Then, snap two of the four strands into the bead to create an I-shaped sister chromatid. Repeat this step with the other two strands and anotherfive-holed bead. Once both sister chromatids are constructed, connect them by their five- holed beads, creating an"X" shape. c. d. Repeat this process using 20 new beads (of a different color) to create the second sister chromatid pair. See Figure 5 for reference. Assemble a second pair of replicated sister chromatids. This time, use 12 beads per pair (sik beads per each complete sister chromatid strand). 2. Repeat this process using 12 new beads (of a different color) to create the second set of sister chromatids. See Figure 6 for 3. 4. Configure the chromosomes as they would appear in each stage of the cell cycle (prophase, metaphase, anaphase, telophase, and cytokinesis). Diagram the images for each stage the number of chromosomes present in each cell during each phase. each stage. Be sure to indicate Figure 6: second set of replicoed ch sion: Mitosis Beads Prophase Metaphase Anaphase

Explanation / Answer

In this experiment, it is demontrated that you start with 20 X2 =40 beads to prepare one pair of chromosome and than 12X2=24 for the next set of chromosome pairs. This is only two set of chromosome pairs only. For next 21 pair of chromosome you have to use another set of beads for each set of chromosme (12X2=24 for 21 sets = 21X24 =504 beads). Hence you need a total 568 beads (40 (first set)+24 (second set)+504 (subsequent 21 sets)). By using 568 beads you got the 23 chromosome per daughter cells. Hope you understand the fact. Thanks.

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