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Forensic DNA: Anton Van Leeuwenhoek

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DNA is who we are, it also identifies who we are. Repetitive DNA makes up most of the DNA, which is used in forensic DNA analysis. Within the DNA there is a repeating series that’s known as the STR ( short tandem repeat). Everyone is different with the number of repeats, but have the same sequence in the same places. The STR can identify an individuals DNA profile. When people think of DNA, they think fingerprints or hair samples. This is one way detectives and investigators solve murders and other mysteries. There are other ways to find DNA with looking for skin under the finger nails of the victim. This is when DNA profiling comes in use, In order to see who skin was left behind under the finger nails they would use DNA profiling. The skin …show more content…

For example, Scientist determines a cell’s shape by microscopic examination. Anton Van Leeuwenhoek was one of the first to introduce the microbial world. In Anton Van Leeuwenhoek ‘s exact words “ No more pleasant sight has met my eye than this of so many thousands of living creatures in one small drop of water.” This was written longer than three hundred years ago. The CDC studies different kind of diseases suck as lyme disease and different skin disorders. They use microscopes to see objects that cant be seen with the naked eye like micro …show more content…

Aquatic biomes occupy around 75% of Earth’s surface, its determined by their salinity and other physical factors. Freshwater biomes make up less than 1% of the Earth, and contains a mere of 0.01% of its water. Basically, we depend on fresh water biomes for drinking and other resources. A wetland is another biome.

An ecosystem consists of abiotic factors in addition to the community of species in a specific area. For example, in a forest ecosystem consists of not only plants and animals, but also the soil,water, sunlight and other resources. Ecosystems are influenced by human actions and may pose an even greater threat to life on earth, including ourselves. Freshwater ecosystems are being polluted by large amounts of nitrogen and phosphorus that comes from fertilized farms and livestock

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