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TraitForge — a bright genetics world of DNA and heredity

TraitForge

A virtual genetics lab: extract the pattern in DNA, predict inheritance, and edit a gene — from Mendel's peas to CRISPR. Cross two parents, read a family tree, and fix a broken base like a gene editor.

Cross two parents Build a DNA strand
Level 1

Most popular

Punnett Square Builder Fill the cross grid to predict offspring — then work backwards from a ratio. DNA Lab Build the matching strand, transcribe to mRNA, or fix a point mutation. Predict the Cross Guess the offspring ratio before the grid fills in. Pedigree Detective Read a family tree for dominance and carriers.
Brain Break Take a quiet moment between crosses — a fun science riddle or a short breather. Brain breaks help you remember what you learn.

All activities

Genetics labs

Punnett Square Builder Fill the cross grid to predict offspring, then flip it — work backwards from an offspring ratio to name the parents' genotypes. DNA Lab Build the complementary DNA strand, transcribe DNA into mRNA and read the codon chart, or fix a point mutation like a gene editor. Bead Box Split the beads and discover segregation — how alleles separate into gametes. Predict the Cross Guess the offspring ratio before the grid fills in — then check. Dihybrid Cross Follow TWO traits at once — predict the 9:3:3:1 ratio, then fill the 4×4 grid and see why traits sort independently. Pedigree Detective Read a family tree for dominance and carriers — real inheritance detective work.

Practice & play

Mixed Practice A short round across the kits you have played — brought back to make it stick. TraitForge Sprint Race your OWN best on what you already know. Timer optional, no penalty for a miss. Trick Questions Brain-teasers with a twist — spot why the obvious answer is a trap. Teach the Cast Teach a genetics idea to a cast member still learning it — teaching makes it stick. Gene Duel 2–4 players take turns on one device — same questions, highest first-try score wins. Genetics Expedition A progression trail through every kit — clear each stop of real practice, then move on. Progress Your levels, streak, and how each skill area is coming along — saved on this device. Progress report For grown-ups — a private on-device snapshot mapped to the skill areas. Export a CSV or print.
Concept Kits — 16 kits from DNA to real-world genetics

From DNA structure and heredity up through mutation, evolution, and biotech — a short round with a hint whenever you get stuck. Progress stays on this device.

Kit 1: DNA Structure & Function DNA structure · grades 4-5 · 25 questions Kit 2: Heredity Basics Heredity & genes · grades 4-5 · 25 questions Kit 3: Punnett Squares Punnett squares · grades 5-6 · 25 questions Kit 4: Mutations & Genetic Variation Mutations & variation · grades 5-6 · 25 questions Kit 5: Genetic Traits & Phenotypes Traits & phenotypes · grades 5-6 · 25 questions Kit 6: Biotechnology & Genetic Engineering Biotech & engineering · grades 6-7 · 25 questions Kit 7: Evolution & Genetics Connection Review · grades 6-7 · 25 questions Kit 8: Human Genetics & Genetic Disorders Human genetics · grades 7-8 · 25 questions Kit 9: Genetic Engineering & Biotechnology Biotech & engineering · grades 6-8 · 25 questions Kit 10: Human Genetics & Genetic Disorders Human genetics · grades 6-8 · 25 questions Kit 11: Population Genetics & Evolution Evolution & populations · grades 6-8 · 25 questions Kit 12: Epigenetics & Gene Expression Gene expression · grades 6-8 · 25 questions Kit 13: Cross-Topic Connections Review · grades 5-6 · 25 questions Kit 14: Real-World Applications Real-world · grades 6-7 · 25 questions Kit 15: Misconceptions & Reasoning Reasoning · grades 6-7 · 25 questions Kit 16: Advanced Synthesis Review · grades 7-8 · 25 questions

More ways to play

Trait Run Confidence Ledger

Same idea, another world

Something you practice here shows up somewhere else too — that's real learning that travels.

A Punnett square is a probability table: the 3-to-1 offspring ratio is favorable outcomes over the total — the same counting behind dice. The shared idea: probability as favorable-over-total — a Punnett square counts favorable offspring over all equally-likely combinations, exactly how you compute any chance Try ChanceForge →
TraitForge mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Explore all the stories →

📚 Books for TraitForge

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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