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Lesson 4 Complete!

Mendel

Peas

Phenotypes

Inheritance

Dominant & Recessive

Ratios 1

Ratios 2

Checkpoint

Human Health

Summary

Great job - You did it!

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You should now understand the following terms:

  • Genotypes and phenotypes

  • Heterozygous and homozygous

  • Dominant and recessive

You should also be able to visualize Mendelian inheritance with a Punnett square and explain why 3 : 1 is the expected phenotypic ratio of offspring from two heterozygous parents.

If you want to review what you have learned offline, click here for a PDF version

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