AP Lab 3 Mitosis and Meiosis

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AP Lab 3 Mitosis and Meiosis
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Review

• Mitosis and the cell cycle
• Phases
• G1, S, G2
• Parts of microscope and troubleshooting!

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Lab Tips!

• Complete 3A on your own.
• For 3A2, work in partnerships.
• One person calls out phases, the other records in
  Table 3.1
• COUNT A MINIMUM OF 200 CELLS!
• Onion Root Tips look at the apical meristem!

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http//www.lima.ohio-state.edu/biology/images/root
tip.jpg
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http//www.lima.ohio-state.edu/biology/images/apic
al_meristem.jpg
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Quick Review

• What is the goal of meiosis?
• What are the phases and actions in the phases?
• What is crossing over?
• What is the result
• of crossing over?

http//www.ekcsk12.org/science/aplabreview/mitosis
meiosislab.html
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2n
germ cell
germ cell
each chromosome duplicating during interphase
n
MEIOSIS I separation of homologues
MEIOSIS II separation of sister chromatids
gametes
gametes
2n
diploid number restored at fertilization
Fig. 10.11, p. 172
zygote
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Sordaria ascospores
Sordaria ascospore images from http//www.ac-orlea
ns-tours.fr/svt/theme4/sordaria/pcdefault.htm
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Debrief

• Any questions on main concepts?
• Mitosis
• Meiosis
• Gametogenesis

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Mitosis Findings

• Which phase dominated?
• Any questions on analysis questions?

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Meiosis Findings

• Any questions on analysis questions?