Figure 12.0 Mitosis

Homologous chromosomes

Figure 12.4 The cell cycle

Figure 12.3 Chromosome duplication and distribution during mitosis

Objective: You will be able to draw the stages of mitotic cell division. Do Now: Read through the figure on p Pay attention to what is happening with the chromosomes.

Figure 12.5 The stages of mitotic cell division in an animal cell: G 2 phase; prophase; prometaphase

Figure 12.5 The stages of mitotic cell division in an animal cell: metaphase; anaphase; telophase and cytokinesis.

Figure 12.5x Mitosis

Objective: You will be able to differentiate between cytokinesis in animal and plant cells. Do Now: Read, “Cytokinesis”, on p. 248 Differentiate between cytokinesis in plants and animal cells.

Figure 12.8 Cytokinesis in animal and plant cells

Figure 12.9 Mitosis in a plant cell

Figure 12-09x Mitosis in an onion root

Objective: You will be able to describe the various types of asexual reproduction. Do Now: Read “Controls on Cell Division” on p. 250 Why do cuts heal?

Figure Mechanical analogy for the cell cycle control system

Objective: You will be able to explain how a cell can become cancerous. Do Now: Read “Uncontrolled cell growth” on p. 252 What do all types of cancer have in common.

Proto-oncogene DNA Translocation or transposition: gene moved to new locus, under new controls Gene amplification: multiple copies of the gene Point mutation within a control element Point mutation within the gene Oncogene Normal growth-stimulating protein in excess Hyperactive or degradation- resistant protein Normal growth-stimulating protein in excess Normal growth-stimulating protein in excess New promoter

Objective: You will be able to draw the stages of meiosis. Do Now: Read “Chromosome number” on p. 275 Differentiate between a cell that is diploid and on that is haploid.

Chapter 13: Meiosis

Figure 13.x5 Human male karyotype shown by bright field G-banding of chromosomes

Figure 13.7 The stages of meiotic cell division: Meiosis I

Figure 13.7 The stages of meiotic cell division: Meiosis II

Figure 13.8 A comparison of mitosis and meiosis

Figure 13.8 A comparison of mitosis and meiosis: summary

Figure The results of crossing over during meiosis