BIO101: Introduction to Molecular and Cellular Biology

Watch these lectures for an explanation of inheritance and genetics. Punnett squares are named after the geneticist Reginald Punnett, who developed the method for predicting probabilities. Work the examples to practice Punnett squares.

After you watch, you should be able to distinguish between dominant and recessive, distinguish between heterozygous and homozygous, distinguish between genotype and phenotype, use a Punnett square to predict the results of a monohybrid cross, use a Punnett square to predict the results of a dihybrid cross, and state the phenotypic and genotypic ratios of Punnett crosses.