Heredity and genetics

Introduction to heredity

Heredity and Classical Genetics. Dominant and recessive traits. Heterozygous and homozygous genotypes.

Punnett square fun

Dihybrid crosses. Independent assortment. Incomplete dominance. Codominance and multiple alleles.

Sex-linked traits

Chromosomal basis for gender. Sex-linked traits.

Genetics 101 part 1: What are genes?

Find out about the basics of cells, chromosomes, and the genes contained in your DNA.

Genetics 101 part 2: What are SNPs?

Learn about the variations in human DNA called SNPs, and how they can be used to understand relationships between people.

Genetics 101 part 3: Where do your genes come from?

Find out how chromosomes and genes are passed down from parent to child.

Genetics 101 part 4: What are phenotypes?

Discover how your observable traits, or phenotypes, are the result of interactions between your genes and environment.