This unique kit contains simple activities designed to teach basic fruit fly genetics without using live flies. Drosophila Melanogaster is used without the inconvenience of maintaining live fruit fly cultures. Includes 15 sheets each, with snap apart features showing male and female and 4 types of fruit flies. Students can perform crosses using plastic pieces printed with features allowing them to observe and simulate sex determination, single factor inheritance, double factor inheritance, sex linkage, dominance and recessiveness. Teacher’s Guide and Student instruction sheet included.
The sample is placed in a container with a base made from gauze with a mesh designed to hold soil particles but permit the animals to pass. The container is arranged over a funnel – with a light above. The heat causes the animals to move away from the top of the sample – through the gauze sheet and into the funnel from which they can be collected. Used to extract small invertebrate animals from a dry soil sample. Most species are collected after two hours – but complete extraction takes two-three days.
Soil auger screw type. With an eye to accept tommy bar (not included). Collection of soil samples.
High-quality straight-line reticle fits inside most stereomicroscope eyepieces.
Diameter is 25 mm; 5-mm scale with 100 divisions.
Includes retainer ring to secure reticle in eyepiece.
Corrosion Proof and Highly Reliable for Medical Application.
Made of Stainless Steel.
This set of 5 injection-molded.
Works with any adapter.
Polymer rings provides the perfect fit for eyepieces with diameters ranging from 39 to 60.75 mm.