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.
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]
Khan Academy
Khan Academy: Applying the Hardy Weinberg Equation
Using the Hardy-Weinberg equation to calculate allele and genotype frequencies. [5:30]
Khan Academy
Khan Academy: Allele Frequency
Allele frequencies in populations and how they differ from genotype frequencies. [7:26]
Khan Academy
Khan Academy: Pedigree for Probability of Exhibiting Sex Linked Recessive Trait
This video looks at a pedigree chart for determining the probability of exhibiting sex-linked recessive traits, specifically colorblindness. [5:18]
Khan Academy
Khan Academy: Classical Genetics: Example Punnet Square for Sex Linked Recessive
Example punnet square for sex-linked recessive trait. [4:53]
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]
Khan Academy
Khan Academy: Science: Biology: Principles of Inheritance and Variation: An Introduction to Mendelian Genetics
An introduction to Mendelian Genetics and inheritance. [5:10]
Sophia Learning
Sophia: Monohybrid Cross: Lesson 1
This lesson will explain how to use a Monohybrid cross when determining genetic traits. It is 1 of 4 in the series titled "Monohybrid Cross."
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...
Bozeman Science
Bozeman Science: Genotype Expression
Paul Andersen explains how genotypes can be expressed or not based on changes in the environment. He starts with a brief description of the Himalayan rabbit and how melanin production can be disrupted by high temperature. He 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.]
Sophia Learning
Sophia: Types of Traits: Lesson 1
This lesson will explain that genotypes can be either homozygous or heterozygous. It is 1 of 4 in the series titled "Types of Traits." [2:15]