Teacher's Pet
Population Genetics
Population genetics deals with genetic differences within and between populations. The video explains why this is the lowest level of evolution. Then it discusses mutations, environmental factors, genetic recombination, and random gamete...
Bozeman Science
Mendelian Genetics
Young scientists explore Gregor Mendel's work on pea plants, his laws of segregation and independent assortment. They work through genetic problems and then finish by looking at Huntington's disease and genetic testing.
Bozeman Science
Hardy-Weinberg Equation
Dark, curly, non-red, and thick hair are all dominant genes. The video begins by defining phenotype, genes, alleles, and genotype. Scholars learn how alleles determine genotype, which directs phenotype, using red hair as the example. The...
Bozeman Science
Genotypes and Phenotypes
Complete heterochromia is a mutation that causes a person to have two different colored eyes. Class members explore how genotypes affect phenotypes. The instructor shows how changes in DNA can occur via mistakes in replication,...
Bozeman Science
Genotype Expression
Did you know that arctic hare have black eyelashes that protect their eyes from the sun? Scholars learn how genotypes are either expressed or not, based on environmental factors. The narrator explores how the Himalayan rabbit, the...
Bozeman Science
Epigenetics
Epigenetic changes, caused by environmental factors, can be passed down several generations, meaning choosing to smoke can affect the life expectancy of your children and their children. Scholars explore epigenetics, learning that...
Amoeba Sisters
Multiple Alleles (ABO Blood Types) and Punnett Squares
Whatever you do in life, always give 100 percent—unless you are donating blood. A video explains how to solve Punnett squares with multiple alleles, in this case blood types. It includes what happens if the wrong type is added,...
Amoeba Sisters
Punnett Squares and Sex-Linked Traits
Until the 1960s, the life expectancy of a hemophiliac was only 11 years. An informative video explains how to solve a Punnett square when there is a sex-linked trait — in this case hemophilia. It includes a discussion of the xy...
Amoeba Sisters
Monohybrids and the Punnett Square Guinea Pigs
Introduce young biologists to monohybrid crosses and simple Punnett Squares. It includes explanations of dominant versus recessive and genotype versus phenotype by exploring different genetic combinations of guinea pigs.
Curated OER
Genetics and The Structure of DNA - Part 1/2
If you could unravel all the DNA in your body and stretch it out, it would reach to the sun and back...over 100 times! How incredible! Cover basic genetic vocabulary and hear a geneticist speak about your body's internal recipe....
Khan Academy
Khan Academy: Introduction to Heredity
Video lesson introduces heredity and genetics, dominant and recessive traits, and heterozygous and homozygous genotypes. [17:26]
Khan Academy
Khan Academy: Worked Example: Punnett Squares
Video tutorial investigates how to use Punnett squares to calculate probabilities of different phenotypes. Includes worked examples of dihybrid crosses, independent assortment, incomplete dominance, codominance, and multiple alleles....
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]
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...
Bozeman Science
Bozeman Science: Hardy Weinberg Equation
In this video, Paul Andersen explains the elements in the Hardy-Weinberg equation; including the allele frequency and phenotype frequency. He begins with a brief explanation of phenotypes and genotypes. A sample problem is worked out and...