Embedded Files
3.1.9-12.S: Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence.
Amoeba Sisters: Intro to Cladograms
Join the Amoeba Sisters as they introduce the basics about cladograms and phylogenetic trees. The Amoeba Sisters walk through the process of building a basic cladogram and mention vocabulary such as: shared ancestral character, shared derived character, clade, and outgroup.
Bozeman Science: Evidence of Evolution
Paul Andersen describes pieces of evidence that Charles Darwin used to support the idea of evolution and his process of natural selection. He begins with the following evidence use in the Origin of Species; artificial selection, biogeography, fossils and homologies. He finishes with a discussion of DNA and how it can be used to unravel the evolution of life on our planet.
Crash Course: Phylogeny: How We're All Related
Crocodiles, and birds, and dinosaurs—oh my! While classifying organisms is nothing new, phylogeny— or, grouping organisms by their evolutionary relationships—is helping us see life in a whole new light. In this episode of Crash Course Biology, we’ll learn why this kingdom-phylum stuff is going out of style and why phylogenetic trees are in.
3.1.9-12.T: Construct an explanation based on evidence that the process of evolution primarily results from four factors: (1) the potential for a species to increase in number, (2) the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, (3) competition for limited resources, and (4) the proliferation of those organisms that are better able to survive and reproduce in the environment.
Amoeba Sisters: Evolution
Explore the concept of biological evolution with the Amoeba Sisters! This video mentions a few misconceptions about biological evolution before providing a general definition. Then this video provides a description of four different evolutionary mechanisms (gene flow, mutations, genetic drift, and natural selection). Finally, the video presents several lines of evidence for biological evolution including homologies (molecular, anatomical, and developmental), the fossil record, and biogeography.
Bozeman Science: Natural Selection
Paul Andersen explains how natural selection is a major mechanism in evolution. The video begins with a discussion of Charles Darwin and the details of natural selection. The data of the peppered moth during the industrial revolution is used to show the process of adaptation. Allele frequencies are calculated before and after the selection. The adaptation of cichlids in African lakes is also included.
Crash Course: Natural Selection
There are lots of ways that evolution happens, and natural selection is just one of them. In this episode of Crash Course Biology, we’ll find out how this process works and shapes traits in all living things —from ginkgo trees to howler monkeys. We’ll also learn how extra-grippy toes help some lizards survive hurricanes.
TedEd: Five Fingers of Evolution
How can a "thumbs up" sign help us remember five processes that impact evolution? The story of the Five Fingers of Evolution gives us a clever way of understanding change in gene pools over time.
3.1.9-12.U: Apply concepts of statistics and probability to support explanations that organisms with an advantageous heritable trait tend to increase in proportion to organisms lacking this trait.
Bozeman Science: Microevolution
Paul Andersen defines microevolution as any change in the frequency of the allele pool. He then explains the five mechanisms of evolution; small sample size, non-random mating, mutations, gene flow and natural selection.
Crash Course: Microevolution
Whether we’re talking about tigers, trees, or tarantulas, evolution happens at the level of the population. In this episode of Crash Course Biology, we’ll find out how natural selection, gene flow, genetic drift, and other processes drive changes in populations. We’ll learn about the Hardy-Weinberg equation, how your alleles make you uniquely you, and how some tigers changed their stripes.
3.1.9-12.W: Construct an explanation based on evidence for how natural selection leads to adaptation of populations.
HHMI: Natural Selection and the Rock Pocket Mouse
How quickly can natural selection work? "The Making of the Fittest: Natural Selection and Adaptation" tells the story of a living example of Darwin's process of natural selection and shows how quickly a trait can spread through a population when natural selective pressure is strong.
The rock pocket mouse shows how different genetic changes can lead to the same adaptation — a coat color that hides the rock pocket mice from predators, such as owls.
HHMI: Sickle Cell Natural Selection
This film explores the evolutionary connection between an infectious disease, malaria, and a genetic condition, sickle cell disease.
3.1.9-12.X: Evaluate the evidence supporting claims that changes in environmental conditions may result in (1) increases in the number of individuals of some species, (2) the emergence of new species over time, and (3) the extinction of other species.
Beverly Biology:
This short video compares and contrasts divergent evolution with convergent evolution.
HHMI: The Beak of the Finch
The Galápagos finches remain one of our world’s greatest examples of adaptive radiation. Watch as evolutionary biologists Rosemary and Peter Grant detail their 40-year project to painstakingly document the evolution of these famous finches. Their pioneering studies have revealed clues as to how 13 distinct finch species arose from a single ancestral population that migrated to the islands 2 million to 3 million years ago.
Sketchy Learning: Patterns of Evolution
Learn the patterns of evolution: divergent, convergent & parallel. Learn about reproductive isolation, most recent common ancestor, and deciphering species traits.
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