Write about the arguments for and against developing a genetic Essay

Write about the arguments for and against developing a genetic fingerprint profile for all members of society - Essay Example The fragments produced are invisible at this stage and so the fragments are transferred to a nylon membrane using southern blotting which involves adding a layer f absorbent paper to the nylon membrane. The DNA is then drawn upwards by capillary motion. The DNA fragments are then denatured by heating to give single stranded DNA. A radioactive isotope f phosphorus with a base sequence identical to one f the VNTR sequences is used to locate the particular bands. This is also known as a DNA probe and it binds to its complementary single stranded DNA. Any excess probe is washed off. The probes are accurately located by placing X-ray film over the nylon membrane. DNA fingerprinting is a method that compares the fragments f DNA. DNA fingerprinting was first invented to detect the presence f genetic diseases. Today, DNA fingerprinting is used in different ways. DNA is analyzed using a Southern Blot, which allows scientists to observe the base pair patterns. DNA fingerprinting can be used in a few different ways. First, to find out if the child belongs to a person DNA fingerprinting may be used. When a child is born, it inherits the VNTR's from the father and the mother. VNTR's are variable number tandem repeats, which is repeated sequences f base pairs. The VNTR patterns are used to determine the father or mother.

Value of knowledge on science and belief Essay Example | Topics and Well Written Essays - 750 words

Value of knowledge on science and belief - Essay Example   Scientific knowledge has contributed widely to the improvement of human living. It has made strides in the medical field in testing and discovery of new drugs to cure diseases. Over time many scientists have made groundbreaking discoveries in the medical field, for instance, Chinese scientist Youyou Tu developed a prizewinning anti-malarial drug which helped combat the debilitating disease that attacks hundreds of millions of people annually. It has also enabled human beings to adopt more healthy lifestyles by pointing out diseases caused by poor lifestyles, like blood pressure. The world of agriculture has also been revolutionized by new knowledge which farmers have greatly taken advantage of to improve their yield. The Consultative Group on International Agricultural Research (CGIAR) for instance started the Green Revolution of rice and wheat in Asia which has raised the average yield of rice and wheat by a tremendous lot. Research in the science doctrine has enabled us to beco me aware of harmful activities that deteriorate Mother Nature and also harmful chemical substances to health. Human beings have directly impacted nature negatively by continuous pollution which makes irreversible damage to the environment. A good example is greenhouse gases in the atmosphere which are believed to lead to global warming. For instance the controversy of Genetically Modified Organisms which were discovered and developed by scientists in attempt to improve yield in harsh growth conditions.