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To what degree are we genetically programmed with certain traits and abilities? Looks at recent technologies and scientific discoveries and considers the classic "nature versus nurture" discussion. Segments cover identical twins, the science of biotechnology, and the genetic inheritance of working dogs. Investigates the similarities in personality shared by identical twins. Explains how recent breakthroughs in genetics research and DNA have created new ways to solve crimes, breed (clone) animals, and extend human life. Discusses cross-species cloning, human cloning, and gene therapy. Shows how assistance and search-and-rescue dogs can be taught to overcome their inborn instincts and fear.
(Source: DCMP)
Biology is the study of life. It encompasses the cellular basis of living things, the energy that underlies the activities of life, and the genetic basis for inheritance in organisms. Topics covered include the smallest components of living things: atoms, molecules, organelles, and cells. Part of the "Biology" series.
This video explores the mystery of why the traits of some offspring resemble their parents and others do not. The concept of heredity is discussed, as is the process by which genetic material is passed on from one generation to the next. Through colorful animations and vivid footage, students explore the key concepts concerning the inheritance of characteristics.
No organism lives forever. The length of time animals and humans live is influenced by their genes. Scientists have made astonishing discoveries concerning the role of genetics in determining life span, and this holds promise of extending the lives of animals and humans. Explains genetics, DNA, and genetic theories of aging. Illustrates the genetic processes behind cellular aging, and shows how genes affect life span. Discover the reasons why cells age and why a certain enzyme can effectively turn back the hands of our "biological clock."
Nature vs. Nurture is a long-running debate in the social sciences. While human genetics is an important part of the story, recent scientific developments suggest that the way genes actually work can be critically shaped by the environment in which one lives. Dr. Nessa Carey and Dr. Guy Sutton explore the ways epigenetics gives a new and exciting dimension to the debate.
Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Protein Nature of Life," "Protein Structure," "Transcription," "Translation and Protein Synthesis," "Gene Regulation in Prokaryotes," "Classes of Eukaryote DNA," "Exons and Introns," "Mutations," and "Renegade DNA: The Viruses."
Genes, those traits passed down to us by our parents, are the things that make each of us different from the others. This question-answer format covers basic information about genes, chromosomes, cell division, dominant and recessive genes, and fertilization. Illustrates Mendel's rules of heredity. Covers advances in the fields of DNA, genetic engineering, and gene therapy. Reviews major points.
Mosquitoes spread several viruses, including Dengue, Chikungunya, Yellow Fever, and Zika. Health officials are developing various methods to help reduce the spread of infections. One of those methods is to produce genetically modified mosquitoes that, when released into the wild, reproduce with wild mosquitoes and cause their offspring to die.
Investigates the reasons why cattle and humans have been linked together for over 30,000 years. Analyzes the anatomy of the cow's stomach, detailing the purpose of each chamber. Visit the Masai with their cattle herds and the sacred cows of India. Introduces the main cattle breed of the 800 breeds developed in England, explaining how artificial selection is used to produce desirable characteristics. Also introduces British dairy cow detailing the working of the udder and teats and the use of genetic engineering to increase milk production. Interviews Eric Schlosser, an author about the development of slaughterhouse methods in America. Also visits a family ranch where cattle are being raised in natural conditions under a grass management system.
Explore efforts to decrease the use of pesticides by genetically engineering resistance in plants. Viewers also consider the debate over the benefits and risks of genetically modified organisms. Part of "The Botany of Desire" series.
New scientific evidence suggests that some wolves evolved into dogs by domesticating themselves, and not by humans taming them. Features evidence that dogs have traveled and been buried with humans since prehistory, adapting to every climate and evolving into many subspecies or types of the same dog species. Human cultures might not have evolved as they did without the help of the dog, our most cherished and probably first domestic animal companion.
Amy Battocletti is a Navy veteran who was awarded an NSF Graduate Research Fellowship in 2014. She’s a doctoral candidate in biology at Georgetown University, conducting research on the impact of genetic variation within plant species in salt marsh ecosystems. Part of the Scientists and Engineers On Sofas Series.
Learn how scientists are attempting to enhance apples' defenses through genetic engineering. Viewers learn why it is important for organisms to have a wide variety of genes. Part of "The Botany of Desire" series.
Scientist He Jiankui will likely go down in history as the first human to genetically engineer another living person. In this segment, host Trace Dominguez talks with Hank Green about the science and ethical issues of genetically altering humans. Part of the "Uno Dos of Trace" series.
With recent advances in genetic and reproductive technology, couples can now rely on science to avoid giving birth to children with various genetic conditions. Explores the medical and ethical dilemmas that two couples face as they plan the birth of a child who may inherit their own genetic condition (dwarfism in one case, cystic fibrosis in the other). Bioethicists question the use of technology to ensure parents give birth only to a healthy child. NOTE: Includes footage of a baby being born via Caesarian section.
Genetic modification of organisms and cloning is controversial. Looks at the way humanity has modified genomes of plants and animals used for food since the dawn of agriculture. As knowledge of cells and genetics has increased, so has humanity's ability to alter genomes. Shows animations of how genetic engineers are now able to construct and insert genes for desirable characteristics into plants and how technology is used to increase numbers of animals with desirable traits and screen out those with disease or lower food yields.
In biology, a chimera is a single organism whose body is made from parts of two or more genetically distinct individuals of the same species. Biological chimeras were once thought to be rare, but modern genetics has shown that these genetic mashups are more common than previously thought. Part of the "It's Okay to Be Smart" series. Please note this title discusses human reproduction.
Human babies drink milk; it's the food especially provided for them by their mothers. Various cultures have also added the milk of other mammals to their diet, and adults think nothing of downing a glass of cows' milk. But worldwide, only a third of adults can actually digest lactose, the sugar in milk. Human geneticist Spencer Wells tracks down the genetic changes associated with the ability to digest lactose as adults. Combining genetics, chemistry, and anthropology, this story provides a compelling example of the co-evolution of human genes and human culture.
Explore the natural gene bank of the domestic apple located in Central Asia. Viewers learn about efforts to preserve the genetic diversity of apples. Scientists are using conservation and genetic engineering to aid the process. Part of "The Botany of Desire" series.
For life to survive, it must adapt and readapt to an ever-changing Earth. The discovery of the Antarctic icefish has provided an example of adaptation in an environment both hostile and abundant, where the birth of new genes and the death of old ones have played crucial roles. Researchers Bill Detrich, Christina Cheng, and Art DeVries have pinpointed the genetic changes that enable icefish to thrive without hemoglobin and red blood cells and to avoid freezing in the icy ocean.
Showing collections 1 to 2 of 2
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
