Selective Animal Breeding: Create a New Breed
Understand how parent selection and generation-by-generation selection produce a new animal breed.
Protein Synthesis: Transcription and Translation
Understand how information moves from DNA to mRNA and how the ribosome with tRNA builds a protein from amino acids.
All Simulations
Blood Circulation: Heart and Two Loops
A clear school-level diagram of the heart, pulmonary loop, and systemic loop: follow venous and arterial blood as it moves to the lungs and internal organs.
Breathing and Gas Exchange: How the Body Gets Oxygen
Follow air to the alveoli, track O₂/CO₂ exchange with blood, and compare rest vs load breathing.