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Fertilisation & Early Cleavage Simulator (2D)

2D top-down fertilisation race: sperm swim toward an oocyte through the corona radiata and zona pellucida, the zona block against polyspermy fires on the winner, and the zygote cleaves through 2-, 4-, 8-cell and blastocyst stages with 2D area-conserving cell radii.

Biology2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion drives the same reproductive-biology race and cleavage model as the 3D version through a flat, top-down canvas view: sperm cells swim inward across an annular arena, cross the corona radiata, and probabilistically bind the zona pellucida at a rate set by motility over zona resistance; the winner triggers a visible cortical reaction that hardens the zona and freezes every other sperm in place, after which the zygote divides on a 2D area-conserving schedule (radius ∝ n^-1/2, distinct from the 3D sphere-volume model's n^-1/3) through 2-, 4-, 8- and 16-cell stages into a blastocyst with a visible trophoblast ring and inner cell mass.

⚙ Under the hood

2D top-down fertilisation-race and cleavage lab with a probabilistic zona-binding model, a cortical-reaction polyspermy block, and a 2D area-conserving cleavage schedule distinct from the 3D volume-conserving one.

reproductive biologyembryologyfertilisationcleavagepolyspermy block

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install