Chargaff's Ratio
This animation describes the typical ratios of bases in DNA.
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Displaying videos 1 - 12 of 202, page 1 of 17.
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The Chemical Structure of DNA
This animation explores the chemical components and bonds of the nucleotides that make up DNA.
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Natural Selection for Lactose Tolerance
This animation shows how a mutation that allows adult humans to digest milk can be lost or spread under different circumstances.
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Sickle Cell Disease
This animation explores the genetic causes and biological effects of sickle cell disease.
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How We Get Our Skin Color
This animation describes how skin color is generated by skin cells as protection against ultraviolet (UV) radiation.
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Malaria: Mosquito Host
This animation shows how the malaria parasite reproduces and matures inside a mosquito.
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Malaria: Human Host
This animation shows how the malaria parasite develops inside a human and eventually causes disease.
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Cystic Fibrosis Mechanism and Treatment
This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.
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Polymerase Chain Reaction (PCR)
This animation describes PCR, a standard laboratory technique for making many copies of a specific DNA sequence.
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DNA Damage and Mutations
This animation shows how mutations can arise when DNA is damaged.
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Greenhouse Effect
This animation provides an overview of the greenhouse effect, a process that warms the atmosphere and surface of Earth.
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The Fate of Fat
This animation shows how dietary fat gets digested, packaged, and sent to various tissues for storage or energy.
