Explain Mendelian inheritance with a simple example

The short version: Mendelian inheritance refers to the rules describing how traits pass from parents to offspring through alleles. A quick example makes it concrete — A Tt × Tt cross gives a 3:1 phenotypic ratio.

How to approach it step by step

Once one example makes sense, the method generalises: set up a Punnett square with parental gametes, then read the ratios. In a visual interactive session the example is built on screen piece by piece, so you see which quantity changes at each step instead of only reading a final answer. Ask for a harder variant and the explanation adapts on the spot.

Worked example

A Tt × Tt cross gives a 3:1 phenotypic ratio.

The mistake most learners make

Reading genotype ratios as if they were phenotype ratios.

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