PraxiLabs vs Virtual Genetics Lab II

PraxiLabs provides virtual science labs and educational content for learners and education providers. Its simulations cover biology, chemistry, and physics, with more than 220 available in the Semester and Annual plans. Learners interact with experiments in 3D, can repeat them, track progress, and receive immediate feedback. Oxi, described as a virtual science lab partner, provides personalized guidance during simulations. The platform also includes multiple-choice quizzes and assessments, reports, and analytics. Individual subscriptions are limited to one user: the Free Plan gives one month of access to three simulations, while the Monthly Plan provides any 10 simulations. Semester and Annual plans include access to all 220-plus simulations. The School plan lists Moodle, Blackboard, and other LMS integrations, plus a built-in mini-LMS; Teacher and University plans are also offered by quote. PraxiLabs runs online in a modern browser on a computer or laptop, with no installation required. The Free Plan costs nothing, the Monthly Plan $6.99 a month, the Semester Plan $29.99 a month, and the Annual Plan $44.99 a year.

Virtual Genetics Lab II (VGLII) is a free simulation for students exploring how traits are inherited. Students cross hypothetical creatures and examine offspring, using problems that cover one to three genes. Traits can be autosomal or sex-linked, with simple dominance, co-dominance, or incomplete dominance; instructors can restrict which models are available. Model Builder lets students enter and save genetic models, and instructors can compare responses with correct answers for grading. Version 3 includes chi-squared calculations in the Summary Chart, epistasis and complementation models, and Super Crosses of up to 2,000 offspring. Desktop downloads are listed for Windows, Mac OS X, and Linux/UNIX, and the download page says VGLII requires Java 7 or higher. The maker also describes jsVGL, a browser-based version that does not use Java and can load and save work. The maker says VGLII will no longer be supported, while support will continue for jsVGL. Some macOS versions may show an error about loading the Java Runtime Environment; a workaround uses the app's VGLII.jar file.