AP Biology Lab 3 Objectives: Observe mitosis in plant and animal cells Compare the relative lengths of the stages of mitosis in onion root-tip cells Simulate the stages of meiosis Observe evidence of crossing over in meiosis using Sordaria fimicola Estimate the distance of a gene locus from its centromere

Note: Sold only to schools and businesses; cannot be shipped via USPS. The 8-station replacement kit includes all * items. Kit includes: Whitefish/Onion Mitosis Slide Sets Whitefish/Onion Mitosis CD-ROM Toluidine Blue O Buffer Solution* Hydrochloric Acid (1 M)* Sordaria 35mm Transparency Transfer Pipets Microscope Slides* 4 1/2-oz Cups Coverslips* Sordaria Demonstration Cross Plate Razor Blades Clothes Pins Pearl Onion Bulbs* Needed but not included: Microscopes Chromosome Simulation BioKit® (item# 171100) Scalpel

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For AP® Biology Lab 3. Using prepared slides and electronic images on embryonic animal and meristematic plant tissues, student learn about the 4 stages of mitosis. A Sordaria Demonstration Cross Plate for demonstrating crossing-over during meiosis is also provided. Kit includes materials and instructions for extension activities at no extra cost to the teacher. Sordaria cultures are shipped on Fridays only and are ready for use the following Wednesday, Thursday, or Friday.

The 8-Station Kit includes enough materials for a class of 32 to successfully complete the mitosis portion of the Mitosis and Meiosis Laboratory. The meiosis portion requires item #171100 Chromosome Simulation BioKit®, which is not included. The 1-Station Kit includes materials for one lab group of 4 students.

The 8-Station Replacement Set includes all * items.

(see SPECIFICATIONS tab for kit contents)