How do organisms end up with such a wide variety of traits? It's in their genes! Kick off your inherited traits lesson using a brief video that covers alleles and genes. The narrator describes heterozygous and homozygous genotypes, how...

Donate old socks for science! Young biologists model mitosis and meiosis, using socks as chromosomes and a balloon as a nucleus. This ingenious idea for modeling cell division will be more memorable to your young biologists than any set...

Scholars see, through a monohybrid cross, how alleles are distributed during meiosis. The video instructor then explores Thomas Hunt Morgan's research on fruit flies, determining that genes are located on chromosomes and showing that...

Junior geneticists tally eye color and height in their lab groups. They examine certain traits in soybean and corn seedlings. For each activity, they gather data and learn about continuous and discontinuous genetic variation. In another...

Doctors sometimes order a karyotype, a picture of the chromosomes present in a single cell, in order to check for chromosomal abnormalities or rare diseases. The video explains the relationship among genes, chromosomes, and karyotypes....

Bye bye, Y! Is the most fundamental difference between men and women slowly going away? Science scholars discover the story behind the ever-shrinking Y chromosome in an interesting human biology video. Topics covered include...

Forward and backward, it's all the same! Scientists recently discovered the y chromosome's palindrome nature suggests it's possible to for the y chromosome to recombine with itself! An animation resource gives viewers insight into the...

As we get older, we age, our bodies and minds deteriorate, but this isn't true of all species. The video begins with why we age and what biological processes cause aging. Then it covers research on worms, mice, and other animals that...

What's your type? Genetically speaking, of course! Immerse your class in the world of karyotypes through an insightful activity from the K20 Center. Scholars take on the role of genetic counselors to determine the karyotype of offspring...

What do cats and human DNA have in common? The second lesson of a series focuses on the mapping of mammal genomes. Scholars learn about the structure of DNA as they compare the chromosomes of humans and felines.

Everything is in the genes. Individuals observe 14 different traits of themselves. Using pipe cleaners and beads, the learners create models of a chromosome representing their traits. The class then compares and contrasts everyone's...

Scholars analyze Morgan's fruit fly lab to learn how genes are linked. The instructor shows that the data from a dihybrid cross was not what Morgan expected, and when re-crossed numerous times, the data did not change. Viewers see gene...

No, you didn't get your genes from the local clothing store. Learn where they really come from by watching this video as it explores how the genes found in all plants and animals today have arisen over...

Learners create models of chromosomes using clay, coins, beads, or marbles. They complete a worksheet regarding their crossover frequencies they created with their chromosomes and gene models. They read an essay on sex chromosomes and...

Young scientists demonstrate their creativity while completing several activities, to assess genetic variations and mutations. Instructors provide a list of options and scientists choose to write a comic strip, create a book,...

Mutations are not just deformed creatures we see in movies—they happen every day! Scholars study the different types of genetic mutations in the 12th installment of a series of 18 lessons. A creative activity uses candy and other food...

High schoolers are introduced to mapping by crossover frequency. Genes travel as packaged trains on chromosomes. They use this experiment, genetic mapping assignment, that allow students to quickly complete the assignment and yet...

Young scholars study DeoxyriboNucleic Acid or commonly known as DNA and discover importance of DNA strand, chromosomes, and genes.

The instructor in a biology video defines and shows examples of incomplete dominance, codominance, epistasis, and multiple alleles. Viewers then explore Thomas Hunt Morgan and his crosses showing the discovery of gene linkage via fruit...

Crack open the mysteries inside a genome. Participants view an animated video describing the relationship between DNA, genes, proteins, chromosomes, and an organism's genome. A post-video activity allows pupils to apply knowledge by...

The strengths and problems associated with Mendelian genetics are explored in a video that first reviews Mendelian genetics and independent assortment. Viewers then explore problems with Mendelian genetics such as linked genes,...

How do changes in DNA affect an organism? Scholars explore chromosomes, genes, DNA, and mutations by modeling the DNA of a strawberry. They build a DNA model, then manipulate it to show how changing the genes transforms the strawberry...

Pregnant women exposed to PAH air pollution increase the risk of obesity in their children. The example of epigenetics, along with others, builds the basis for understanding the process of cell differentiation. Scholars view a video,...

Potatoes have more chromosomes than humans. A video explores the number of chromosomes various species have and the theories of the differences. It discusses the process of how genes combine as well as the processes of making extra copies.