Khan Academy
Khan Academy: Alleles and Genes
Understand how a gene is a stretch of DNA on a chromosome. Find out about alleles in their role as versions sequence variants of a gene. [8:18]
Amoeba Sisters
Amoeba Sisters: Multiple Alleles
Join Pinky and Petunia as they explore the genetics behind multiple alleles. Learn how your blood type is linked to your genes! Teachers can visit Amoeba Sisters' website to get a worksheet associated with the video.
Khan Academy
Khan Academy: Heredity and Genetics: Genetics 101 Part 4: What Are Phenotypes?
Discover how your observable traits, or phenotypes, are the result of interactions between your genes and environment.
Sophia Learning
Sophia: Genetic Probablility and Punnett Squares: Lesson 2
This lesson will demonstrate how to use a Punnett square to determine the genetic probability of a child inheriting a trait from the parents. It is 2 of 5 in the series titled "Genetic Probability and Punnett Squares." [6:28]
Amoeba Sisters
Amoeba Sisters: Blood Types and Punnett Squares (Multiple Alleles)
A baby was switched at the hospital! How will the Amoeba Sisters figure out who are the correct set of parents? Follow the process and learn about inherited characteristics such as blood type in this video. [7:04]
Khan Academy
Khan Academy: Classical Genetics: Co Dominance and Incomplete Dominance
Learn about codominance, where both alleles in the genotype are seen in the phenotype, and incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype. [3:28]
Bozeman Science
Bozeman Science: Genotypes and Phenotypes
Paul Andersen explains how changes in the genotype of an individual can affect the phenotype. He begins with genotype:phenotype::letters:story analogy. He explains how mutations can be neutral, beneficial or harmful. He also explains how...
Sophia Learning
Sophia: Traits: Lesson 1
This lesson will explain how traits are passed down by alleles, and that one particular genotype determines one particular phenotype. It is 1 of 3 in the series titled "Traits." [1 min. 8 sec.]