Punnett square: monohybrid cross

Pick each parent's genotype to see the chances of each offspring genotype and phenotype.

Learn Punnett squares properly

StudyAI writes clear notes on any topic you study, with practice quizzes, past-paper questions explained, and interactive models like this one in the notes.

Get free notes and a quiz on this
Free to start. No card needed.

Questions students ask

What is a test cross?

Crossing an organism showing the dominant trait with a homozygous recessive one. Any recessive offspring show the unknown parent was heterozygous.

What formula does it use?

Each parent passes one allele; Aa × Aa gives 1 AA : 2 Aa : 1 aa (3 dominant : 1 recessive).

Free notes on Punnett squares

More biology tools

Body mass index (BMI) calculator
Calculate body mass index from height and mass and see the BMI category. Metric or imperial. Learn its limits …
Magnification: image ÷ actual size
Calculate magnification, image size or actual size of a cell with I = A × M. Free microscopy magnification cal…
Surface area to volume ratio
Calculate the surface area to volume ratio of a cube and see why large organisms need exchange surfaces. Free …
Cardiac output
Work out cardiac output from heart rate and stroke volume at rest and in exercise. Free biology calculator.
All interactive tools
Use this on your own site or class page

Copy this code. It is free to use, as long as the link stays.