Genetics Lab: Punnett Square

Genetics Lab turns DNA, alleles and heredity into something you can see, build and breed: a hands-on genetics game for biology students where every lesson ends with a Punnett square, a genotype or a living 3D creature.

You breed a fictional creature, the Glimmerbeast, across 15 traits and 38 alleles and watch its coat, eyes, ears, wings, horns and more change as Mendelian genetics plays out on screen. Every cross is a real Punnett square with a calculable outcome. No human genetics, just a safe sandbox for learning how inheritance works.

WHAT YOU'LL LEARN: 5 WORLDS, 40 LESSONS

• Mendel Basics: genes vs alleles, dominant and recessive traits, genotype vs phenotype, the monohybrid cross and the Punnett square

• Dihybrid & Probability: two traits at once, independent assortment, the 9:3:3:1 ratio, the product and sum rules and test crosses

• Beyond Mendel: incomplete dominance, codominance, multiple alleles and sex-linked inheritance

• Population Genetics: allele frequencies, the Hardy-Weinberg equation, DNA structure and mutation

• Linked Genes: why 9:3:3:1 is only sometimes true, recombination frequency and map distance

Lessons are short, interactive steps with instant feedback, so genotype and phenotype become intuition, not memorized shortcuts.

THE LAB

• Cross Lab: choose parent genotypes and watch dominant, recessive, incomplete-dominant and codominant alleles resolve into a real offspring, with the ratios beside it

• DNA Lab: build the complementary DNA strand base by base on a 3D double helix; each mispair becomes a mutation that changes a trait

• Drift: watch allele frequencies wander by chance in a small population

• Deduce: test cross puzzles where you work out a hidden genotype from the offspring

• Linkage: measure recombination between two linked genes (Pro)

• Lineage: keep the offspring you like and grow a family tree across generations

PRACTICE EVERY DAY

• Daily Cross: one new Punnett square puzzle every day, free for everyone

• Collection: 120 breeding challenges that ask for a specific genotype or phenotype, from a two-trait target to a sex-linked pattern

• Trait pages with each locus, its alleles and its inheritance pattern

• A weekly lab report of your lessons, challenges and mistakes

AI GENETICS TUTOR

Stuck on why you got 3:1 instead of 1:1? Ask the AI tutor to explain any genotype, cross or ratio in plain language. After a wrong answer in a lesson it can point out the likely misconception. Before the first AI request the app asks for your OK.

WHO IT'S FOR

High school and college biology students, AP Biology and homeschool learners, and anyone who wants DNA, alleles and probability to finally click. No background needed: it starts at "what is a trait?".

FREE AND PRO

Free: the whole first world (8 lessons), 3 traits in the lab, 5 Collection challenges, 3 deduce puzzles, the Daily Cross, a lineage of up to 24 creatures, 15 AI explanations and 3 wrong-answer checks a day (an optional rewarded ad adds a few more explanations). The free version shows banner and full-screen ads.

Pro: all 5 worlds and 40 lessons, all 15 traits, the full 120-challenge Collection, all 12 deduce puzzles, the Linkage lab, AI breeding hints, unlimited explanations and wrong-answer checks, the full weekly report with allele frequencies, and no ads. Plans and prices are shown in the app before you buy; cancel a subscription anytime in Google Play.

EDUCATIONAL ONLY

Genetics Lab teaches genetics with an invented creature. It is not a DNA test, does not analyze anyone's DNA, and gives no medical, health or genetic counseling advice.

YOUR DATA

No sign-up needed: the app starts you on a guest profile, and signing in is optional. AI features send only the question or result you are working on to our server, which passes it to a third-party AI service. The app uses Firebase analytics and, in the free version, Google AdMob ads.

Privacy Policy: https://coddykit.com/terms/privacy-policy