Read p.125 Rain Forest Rescue and 8.1, 8.2, 8.4, 8.5, 8.6. Asexual and Sexual Reproduction. Cell Mitosis Lesson Objectives ∙We will understand the importance of cell reproduction (mitosis). ∙We will learn about all the stages of mitosis. Why Mitosis?.
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Read p.125 Rain Forest Rescue and 8.1, 8.2, 8.4, 8.5, 8.6
Draw figure 8.4b and 8.4c
Do question p. 128
Human cells (eukaryotes) have 25,000 genes
Bacterium (prokaryotes) have 3,000 genes
Chromatin—chromosome material, diffused mass of DNA and protein molecules. Long thin fibers
Found in Interphase of Cell cycle
During interphase chromatin doubles its material—information for 46 chromosomes in humans, duplicates material for 92 chromosomes
As chromatin coils up (prophase)
Sister chromatids (two identical copies) are formed--figure 8.4b
Centromere—connection between sister chromatids
Fuzzy appearance—intricate twists and folds of chromatin fibers
Create table comparing/contrasting stages of mitosis
Leave out prometaphase, include interphase and cytokenesis