Model organism

Foods are exposed to a specific dose of radiation which does not make the foods radioactive. There have been no sign of toxicology or safety issues by irradiating food products. Currently the Food and Drug Administration regulates food irradiation. Types of radiation, duration of exposure and dosage are highly regulated. Any foods that have been irradiated must contain the irradiation symbol on the package. When molecules absorb ionizing energy, they become reactive and form ions or free…

One great organism to study is Caenorhabditis elegans (C.elegans ) because it is hermaphrodites, transparents and small enough to observe under the microscope. After adding mutagens to them, scientists can get all kinds of freak worms after few days. “Bag of worms” are one of them. It can not lay eggs so its body occupied with dozens of eggs. When eggs hatched inside the worm, larvae eat the mother worm and them come out. Ambros, a scientists who just finished doctor degree at MIT, first…

Plant cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, the DNA in a plant cell is housed within the nucleus. In addition to having a nucleus, plant cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a wide range of responsibilities that include everything from producing hormones and enzymes to providing energy for a plant cell.…

With DNA sequencing, you can send a sample of your DNA in to a lab to have it sequenced. Basically, this means that someone will thoroughly examine and look into your DNA. This can be beneficial for a few reasons; these are some of the top benefits of DNA sequencing. 1. Find Out More About Who You Are For some people, DNA sequencing is a good thing simply because it allows them to find out more about themselves. For example, your DNA can show things like your ethnicity. If you are a bit…

Relate the characteristics features of prokaryotic and eukaryotic cell components to their functions Prokaryotes, dating from fossil fuel evidence, have been revealed that they’ve been around for 3.5 billion years, Whereas, Eukaryotes, have been around for only 1.7 billion years. It has been speculated that the eukaryotic cells were evolved by prokaryotes, by symbiosis. Symbiosis is when two different biological species interact with other, for survival. Therefore, the eukaryotes and the…

Most fossils are found within layers of sedimentary rocks called strata. Deeper strata are usually older and therefore fossils from different time period can be compared. Analysis of fossils from different strata suggests that more complex, modern organisms evolved from simpler, more ancient organisms.Imprint fossils are one example of fossils that died and been buried and the sediments get preserved. Biogeography is the study of species distributions. It examines how species have been…

concepts that thread equally into ecological and evolutionary theory. Fresh water ecosystems is a living community of interacting organisms and their physical environment and habitat. Freshwater ecosystems are a subset of Earth's aquatic ecosystems. Some of those aquatic ecosystems include lakes, ponds, rivers, streams, springs, and wetlands. Within an ecosystem the organisms are rarely distributed evenly and therefore it can be very difficult to count their numbers accurately. Scientists…

In this summary response I will be talking about cloning in Brave New World and compare it too gene editing. In Brave New World the have a process called Bokanovsky’s Process which essentially is the fictional process for cloning humans. The human eggs in the story are put in to in vitro which means outside their normal biological habitat. In this world where the government controls everything it’s extremely important for them to control the number of humans. The process does not apply to the…

When dog owners identify an interesting trait in a dog, Some owners would breed that in hope that the trait would be passed on. After many times of this situation happening, (especially where two dogs with the same trait are bred with each other) traits become fixed. If you can understand the genetics, you can start to predict on what you will see in a crossbreed. As of now there are over four hundred breeds of dogs and all are maintained as pure-bred stocks through selective breeding, which…

The evolutionary arms race is between two organisms competing to out rank and outlive one another. One example in this video of the evolutionary arms race is between humans and microbes. Humans and microbes are big ones because microbes all everywhere and they can get stronger as time goes on. Microbes get stronger by giving humans medicines they don’t not get sick but better. One microbe that has affected many people is tuberculous (TB). Many Russian prisoners had got TB from other prisoners…