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Eusociality and Division of Labor - Student Protocol

JoVE 10618

Simulating Eusocial and Solitary Behavior
Note: In this simulation, you will portray either a eusocial or solitary animal. The goal of this simulation is to maximize your fitness by reproducing as many offspring as possible during the allotted five minutes. To do this, you must forage for resources and reproduce within the constraints of your assigned…

 Lab Bio

Optimal Foraging - Student Protocol

JoVE 10614

Simulating Foraging with Artificial Habitats and Prey
NOTE: The foragers will hunt for prey represented by pinto beans in four buckets of rice with varying prey densities. Without knowing what these densities are, foragers must obtain as many prey items as possible in as little time as possible.
HYPOTHESES: In this experiment, the experimental…

 Lab Bio

Measuring Biodiversity- Concept

JoVE 10596

Diverse ecosystems are important for the health of the planet and our survival as humans; it is therefore incredibly important for us to understand and measure biodiversity, which is defined as the variability among living organisms in an ecosystem. Biodiversity can be measured at many different levels including genetic, species, community, and ecosystem. One way to measure biodiversity is to …

 Lab Bio

Transpiration - Student Protocol

JoVE 10581

Comparing Transpiration Rates of Leaves
To begin the experiment to measure the transpiration rates of leaves from different plant species, you will first create a tool called a potometer, using a piece of plastic tubing and 5 mL calibrated pipette.
To assemble the device, simply attach the rubber tubing to the tip of the pipette.
Then,…

 Lab Bio

Energy Dynamics - Student Protocol

JoVE 10578

Caterpillar Energy Dynamics
NOTE: In this lab you will grow caterpillars in conditions with and without food to examine the transfer of biomass in a typical trophic system.
Weigh and record the wet mass of enough leaves of cabbage to line the bottom of a plastic tub.
Then, collect two batches of five caterpillars from their cabbage habitat,…

 Lab Bio

Bacterial Transformation - Student Protocol

JoVE 10574

Bacterial Transformation
IMPORTANT: In addition to wearing the appropriate personal protective equipment, be sure to take care to keep your face away from suspension cultures, and to avoid inhaling reagents. Do not touch your face while performing the experiment. Always wash your hands before and after every experiment.
When you…

 Lab Bio

Diffusion and Osmosis - Student Protocol

JoVE 10564

Diffusion in Agar
NOTE: In this exercise, you will be given agar containing an indicator chemical called phenolphthalein. When phenolphthalein is exposed to the normal alkaline conditions in the agar, it will look pink. But when it is exposed to neutral or acidic conditions, it changes from pink to clear. You will make different size and shaped agar…

 Lab Bio

Evolutionary Relationships - Student Protocol

JoVE 10562

Forming an Evolutionary Hypothesis
NOTE: A cladogram is an important tool for forming an evolutionary hypothesis. A cladogram is a tree-shaped chart used to depict the hypothetical genealogical relationships between species. The tips or leaves of the chart represent specific species and the branches of the tree are different lengths. The different…

 Lab Bio

Hardy-Weinberg & Genetic Drift- Concept

JoVE 10559

Evolutionary change is interesting and important to study, but changes in populations occur over long periods of time and in huge physical spaces and are therefore very difficult to measure. In general, studying phenomena like this requires the use of mathematical models which are built using parameters that can be conveniently measured. These models are then used to make predictions about how …

 Lab Bio

Genetics of Organisms - Student Protocol

JoVE 10558

REF and WEF Fly Genetics
NOTE: At your station, you should have four vials of flies. They will be labeled as male or female. They will also be labeled with the notation REF for red-eyed flies or WEF for white-eyed flies. The female vial should also be labeled virgin as these flies should be unmated for the purpose of this experiment.
Make sure you …

 Lab Bio
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