Bozeman Science
Meselson-Stahl Experiment
One human's entire DNA sequence would take up three gigabytes of storage space. Pupils explore the experiment performed by Meselson-Stahl, which proved DNA copied itself through a semi-conservative process. The instructor explains their...
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
Mechanisms that Increase Genetic Variation
Learn how genetic variation occurs within prokaryotes through transformation, transduction, and conjugation. The instructor then explains how sexual reproduction in eukaryotes can lead to crossing over, random assortment, and random...
Bozeman Science
Linked Genes
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...
Bozeman Science
Hardy-Weinberg Punnett Square
Scholars learn how to use a Punnett square analyzing red hair and then apply this process to an entire gene pool over time. The instructor walks viewers through a few problems, determining percentages found within a gene pool.
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
Genetic Recombination and Gene Mapping
Young scientists explore genetic recombination and gene mapping through analyzing the works of Thomas Hunt Morgan and Alfred Sturtevant. Individuals see how some genes, via fruit flies, can cross over creating greater variation, which...
Bozeman Science
Genetics
An informative video begins with 14 vocabulary words related to genetics, allowing scholars to think about their definitions before the instructor reviews a few tricky definitions. Individuals then learn about Gregor Mendel's...
Bozeman Science
Gene Regulation
If someone recited the ATCG sequence of their DNA without taking a break, they would speak for 57 years. High school pupils learn three new terms related to gene regulation: regulatory gene, regulatory sequence, and promoter. Individuals...
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...
Bozeman Science
DNA Replication
Young biologists explore the theories of DNA replication, learning about the Meselson-Stahl experiment and how it proved DNA replication through semiconservative replication. The video reviews the parts of DNA and then delves...
Bozeman Science
DNA and RNA - Part 2
Viewers explore the structures of RNA and DNA and then learn how DNA replicates itself. The narrator explains the central dogma, showing how DNA is eventually translated into proteins, before briefly discussing genetic engineering.
Bozeman Science
Comparing DNA Sequences
Through the mapping of the DNA of songbirds, scientists have discovered a gene network common among the species. In the video, scholars explore the comparison of DNA sequences, then attempt to place DNA sequences on a cladogram. They see...
Bozeman Science
Chromosomal Inheritance
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...
Bozeman Science
Chromosomal Genetics
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...
Bozeman Science
Cell Cycle, Mitosis and Meiosis
If a cell is unable to regulate the cell cycle, wild cell growth may occur, leading to cancer. Learners explore the cell cycle, using mitosis and meiosis to create new cells. Learners walk, simply, through each phase of the cell cycle:...
Bozeman Science
Advanced Genetics
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,...
Bozeman Science
Graphing Data by Spreadsheet
Watch your pupils Excel at using spreadsheets to graph data by watching a video that covers how to graph data in a scatter plot using Microsoft Excel. The video also covers how to change titles, scales, and labels, as well as how to...
Bozeman Science
Beginner's Guide to Graphing Data
A graph is a graph is a graph. This video reviews different types of graphs (line, bar, circle, histogram, scatter plot) using a matching game. It also describes the purpose of each type of graph to help learners remember when to use...
Bozeman Science
Standard Error
Standard error means ... it's okay to be wrong? Viewers learn how to calculate standard error from the standard deviation and the number of data values, both by hand and by using spreadsheets. The video also shows how to display this...
Bozeman Science
Chi-squared Test
Introduce the concept of hypothesis testing, confidence intervals, and degrees of freedom with a short video that also covers the chi-square test and works through several examples to help viewers understand the material.
Bozeman Science
DNA and RNA - Part 1
Explore the history of DNA through Griffith, Avery, and Watson and Crick. The narrator of a science video briefly covers how DNA is organized in prokaryotic and eukaryotic organisms.