Classroom Activity Objective To learn through an evolution card game how selective pressures can affect an organism's evolution. copy of the "From Wolf to Dog" student handout (PDF or HTML)copy of the "Examining the Game" student handout (PDF or HTML)copy of the "Wolf Deck" student handout (PDF or HTML)scissors1 die Scientists know all dogs descended from the gray wolf, but they don't know exactly how that happened. Tell students that in this activity they are going to engage in a simulation to learn how selective pressures can affect an organism's evolution. Review with students the concepts of gene, gene pool, selective pressure, mutation, species, and genetic isolation (see Activity Answer for definitions). Tell students that they will make a deck of cards that will represent the entire gene pool for a hypothetical group of genes responsible for temperament in a population of wolves.
Nuclear reactor and power plant simulation Introduction This is not a lesson like the others in Radioactivity and Atomic Physics Explained but it fits in well with the lesson on nuclear power. It is a very sophisticated simulation of a pressurised water reactor (PWR), which is the most common type of nuclear power reactor in the US but not in Europe, though the principles are very similar. Using the tour There is a comprehensive tour which goes through the workings of the reactor, starting from a consumer of electrical energy and working backwards to the reactor core itself.
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 PCR is a method by which a few fragments of DNA can be duplicated into millions in a couple of hours. This makes PCR a very useful method in, amongst other fields, forensic science. BluePeopleLab Fourni par Traduction Biology Lab The. Blue People Of Troublesome Names:Creek, KY Who Evolved on First? Bud Abbott and Lou Costello While I was writing this post, I heard that Bill Nye and Ken Ham are planning to have a debate about evolution and creation. While it could be an interesting conversation, I suspect that it will suffer from the same communication problems that afflict most of these debates.
The Zoo of You By Neil Shubin Posted 10.26.09 NOVA You may not feel much like a shark, fruit fly, or worm, but you share many aspects of your anatomy and physiology with these and all other animals on Earth. All the various bits and pieces of you–organs, bones, nerves, even your genes–show up in different but fundamentally similar forms in other animals, in some cases animals that lived half a billion years ago, revealing how all creatures on Earth, including you, are just variations on a theme. Launch Interactive In this interactive, see how closely parts of your body match those in other animals, from sharks to fruit flies. The Transistor Lists of Nobel Prizes and Laureates The Transistor Play the Transistor Recycler Game About the game A transistor is made of a solid piece of a semiconductor material and either used as switches, to turn electronic signals on or off – or, as amplifiers. Read More »
Tongue Rolling and 5 Other Oversimplified Genetic Traits Can you roll your tongue? If so, you’re part of the majority. Between 65 and 81 percent of people on Earth have this strange and seemingly arbitrary talent. But why can some do it while others can’t?