Many scientists and researchers have been involved in evolving the Human Genetic Engineering Concepts And Applications. Alleles of different kinds have an advantage of surviving in changing environments. This is only due to the natural selection. However, these natural selections can be reflected with the infectious disease cycles of virulence and prevalence. A question always remains that why a gene pool has mutant alleles that can prove harmful in the mere future. 
This is the case, even if the detrimental phenotypes have been eliminated from the people. Similarly, there are a lot of Human Genetic Engineering Concepts And Applications. Chances are always there for the disease to remain in a stable position when individuals benefit the heterozygotes. It is a case with those individuals with two similar alleles of wild nature. Other fascinating examples are there that may involve the Human Genetic Engineering Concepts And Applications.
- Sickle Cell Disease
It is a condition in which there is a recessive disorder in an individual that can lead to causing anemia, swollen spleen, pain in joints, and few other infections. This is a perfect illustration of polymorphism. It is because its carriers have resistance to a severe disease like malaria. Parasites of this disease cause long term fever and cold problems in an individual. The life style of this parasite starts in and around the salivary glands. All these factors have been included in Human Genetic Engineering Concepts And Applications.
As soon as a mosquito attacks an individual, then immediately the parasites of malaria start infecting the human blood, then it gets transported into the liver. As a result of that, with every burst of red blood cells, the parasite gets released into the entire body parts. Anthony Allison, a geneticist from Britain, had discovered that sickle cell carrier’s frequency is a lot faster in areas of tropical Africa. This is the area where there is a rage of malaria throughout the year. Human Genetic Engineering Concepts And Applications revolve around the detailed description of sickle cell disease.
- Phosphate Dehydrogenase Deficiency
This kind of deficiency gets linked with the enzyme deficiency related to sex-links. G6PD deficiencies have its affects on more than 400 million people. It is a kind of deficiency that can lead to diseases like homiletic anemia that can prove life threatening at times. Only a few conditions can result in the development of the above disease like inhaling pollen, coming in contract to few severe infections, and consuming certain harmful drugs. Prescriptions may have been mentioned in the Human Genetic Engineering Concepts And Applications.
It is a suggestion that malaria can be protected by making the enzyme deficiency gene inheritance. There is a possibility of autosomal recessive, because of G6PD being a sex-linked deficiency. We may not get this possibility in case of a sickle cell disease. Anemia only happens in people that have enzyme deficiency that is in homozygous females and hemizygous males. Such factors contribute a lot in describing the Human Genetic Engineering Concepts And Applications.