The PCR Method - a DNA Copying Machine
Lists of Nobel Prizes and Laureates The PCR Method - a DNA Copying Machine Play the Eye of the Donkey Game About the game
DNA Learning Center
Home DNA Learning Center Preparing students and families to thrive in the gene age Catalog
List of cognitive biases
Systematic patterns of deviation from norm or rationality in judgment Cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment. They are often studied in psychology, sociology and behavioral economics.[1] Although the reality of most of these biases is confirmed by reproducible research,[2][3] there are often controversies about how to classify these biases or how to explain them.[4] Several theoretical causes are known for some cognitive biases, which provides a classification of biases by their common generative mechanism (such as noisy information-processing[5]). Gerd Gigerenzer has criticized the framing of cognitive biases as errors in judgment, and favors interpreting them as arising from rational deviations from logical thought.[6]
Phases of Mitosis in Plant and Animal Cells
Cell Division Overview Clockwise, from top left: embryonic sea urchin cells, frog skin cells, neuron, 8-cell fish embryo. All of the living organisms on Earth are made up of one or more cells, which are the simplest units of life capable of independent existence and reproduction. Cells have the extraordinary ability to make nearly identical copies of themselves by the process of cell division. Since new cells are only produced by existing cells, cell division is essential for the continuation of life.
Nerve Signaling
Lists of Nobel Prizes and Laureates Nerve Signaling Play the Nerve Signaling Game About
The Cell and its Organelles
Lists of Nobel Prizes and Laureates The Cell and its Organelles Play the Incredible Megacell Game About the game
Transcription (genetics)
Simplified diagram of mRNA synthesis and processing. Enzymes not shown. Transcription can be reduced to the following steps, each moving like a wave along the DNA. Transcription has some proofreading mechanisms, but they are fewer and less effective than the controls for copying DNA; therefore, transcription has a lower copying fidelity than DNA replication.[2]
Pavlov's Dog
Lists of Nobel Prizes and Laureates Pavlov's Dog Play the Pavlov's Dog Game About the game Conditioned reflexes are reflexes you can learn compared to unconditioned reflexes that are built-in, or natural.
Immune Responses
Lists of Nobel Prizes and Laureates Immune Responses Play the Immune Responses Game About
The Split Brain Experiments
Lists of Nobel Prizes and Laureates The Split Brain Experiments Play the Split Brain Experiments
Figure 2 : C.Elegans: : Mining the functional genomic landscape : Nature Reviews Genetics
a | Protocols for administering RNAi in C. elegans. b | Examples of RNAi phenotypes. Top, a control, wild-type embryo at the four-cell stage (left) and an mcm-5(RNAi) embryo showing altered nuclear appearance (right). The timing of cell divisions in this embryo is also abnormal (only one of the cells has divided a second time) after the first embryonic division. Middle, a wild-type, two-cell-stage embryo (left) and a F55H2.3(RNAi) embryo (right) showing vertical rather than horizontal orientation of the spindle pole bodies in the right-hand cell.
Remote Antarctic island is 'richer in biodiversity than the Galapagos'
Antarctica's remote South Georgia Island boasts 90 percent of the world's fur seals, half of the world's elephant seals, is navigated by vast populations of blue whales, sperm whales and killer whales, and has beaches that can be packed shoulder-to-shoulder with nesting penguins. In total, it contains nearly 1,500 recorded species, many of which are found nowhere else on Earth. It's difficult to believe that until recently, this biological treasure was believed to be nothing more than an "inhospitable lump of rock." In fact, researchers now believe that South Georgia Island contains more species than anywhere else in the Southern Ocean, and may be the most biologically diverse remote island in the world — even more diverse than the storied Galapagos Islands, according to the Independent. "It shows you don't have to be a tropical island or in a hot part of the world to support a lot of marine life.
MRI
Lists of Nobel Prizes and Laureates Play MRI the Magnetic Miracle Game About the game In the MRI imaging technique, strong magnets and radio waves are used for getting images of inner organs made of soft tissue, compared to X-ray imaging where you get images of hard tissue, like bones and teeth. Read More »
RNA interference
Lentiviral delivery of designed shRNA's and the mechanism of RNA interference in mammalian cells. RNA interference (RNAi) is a biological process in which RNA molecules inhibit gene expression, typically by causing the destruction of specific mRNA molecules. Historically, it was known by other names, including co-suppression, post transcriptional gene silencing (PTGS), and quelling. Only after these apparently unrelated processes were fully understood did it become clear that they all described the RNAi phenomenon.
