Bozeman Science
Unit 5 Review - Genetics
Paul Andersen reviews the major concepts within the fifth unit of the new AP Biology framework. He starts with a description of both DNA and RNA. He explains how DNA is copied during the S phase of mitosis. He explains how...
Bozeman Science
AP Biology Labs - part 2
Paul Andersen explains the final 6 of 13 AP Biology Labs. The following topics are included: Transformation, Restriction Analysis of DNA, Energy Dynamics, Transpiration, Animal Behavior, and Enzyme Activity.
Amoeba Sisters
Gene Regulation and the Order of the Operon
Explore gene expression with the Amoeba Sisters, including the fascinating Lac Operon found in bacteria! Learn how genes can be turned "on" and "off" and why this is essential for cellular function.
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...
Bozeman Science
Operon
In this video Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase. The...
Bozeman Science
Gene Regulation
Paul Andersen explains how genes are regulated in both prokaryotes and eukaryotes. He begins with a description of the lac and trp operon and how they are used by bacteria in both positive and negative response. He also explains the...
Catalyst University
Purpose & Organization of the Lac Operon
This video discusses in detail the purpose, functions, and organization of the Lac Operon.
Professor Dave Explains
Regulation of Gene Expression: Operons, Epigenetics, and Transcription Factors
We learned about gene expression in biochemistry, which is comprised of transcription and translation, and referred to as the "central dogma" of molecular biology. But how is this process regulated? How does a cell know which genes to...
Bozeman Science
Bozeman Science: The Operon
In this video, Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase.