Transcript Objective: You will be able to draw the stages of mitotic cell division.

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. 246-247
• Pay attention to what is happening with the
chromosomes.
Figure 12.5 The stages of mitotic cell division in an animal cell: G2 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 12.13 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
New
promoter
Normal growth-stimulating
protein in excess
Normal growth-stimulating
protein in excess
Point mutation
within a control
element
Point mutation
within the gene
Oncogene
Oncogene
Normal growth-stimulating
protein in excess
Hyperactive or
degradationresistant protein
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 13.10 The results of crossing over during meiosis