MIDDLE SCHOOL SCIENCE

Choose Your Science Pathway

Explore genetics and heredity with visual lessons, interactive practice, and a final score you can submit to your teacher.

Traits and HeredityStart lesson →Genes and AllelesStart lesson →Dominant and Recessive AllelesStart lesson →GenotypeStart lesson →PhenotypeStart lesson →Homozygous and Heterozygous GenotypesStart lesson →Probability in GeneticsStart lesson →Mendel’s Pea-Plant ExperimentsStart lesson →Monohybrid CrossesStart lesson →Dihybrid CrossesStart lesson →PedigreesStart lesson →Genetic Variation and MutationsStart lesson →Incomplete Dominance and CodominanceStart lesson →Sex-Linked TraitsStart lesson →Natural Selection and EvolutionStart lesson →