Research and write an article on the human genome and how genetic var Case Study

Research and write an article on the human genome and how genetic var iation in the genome has a potential use in health screening - Case Study Example This further comprises of Y chromosome (found in males only) and X chromosomes (two in females and one in males). A mitochondrial DNA is also inclusive in every mitochondrion. The genomes are further classified into noncoding and coding DNA sequences. The coding sequence is unique in that they are transcribed into mRNA to be later converted into proteins in a human lifetime. The other noncoding genomes which use the biggest fraction are not involved in encoding proteins but are instead used for other biological processes (Adolph 1997) Human biology, however, comprises of both the inherited and the environmental traits. It is important to understand that the environment human beings are exposed to can catalyze the occurrence of a disease when coupled with a genetic disorder. For example, an asthma patient is more likely to get an asthmatic attack when exposed to cold and dusty conditions as opposed to an average person. An individual can be said to have a sequence variation when there is an excess or complete absence of a chromosome. Epialleles are defined as identical genes but with differences only exhibited in their epigenetic states (Bodmer 1997). Further classified into three types, epialleles influenced by genotype, determined directly by the genotype of the individual and those purely independent of the individual’s genotype, they are influenced by environmental factors be they hormones or diet. Compared to animals such as chimpanzees that are purported to share a common ancestry with human beings, human beings have undergone a more sophisticated evolution as compared to chimps. (Charles R.Cantor, 2004). Human beings also exhibit many traits of diseases such as Klinefelter Syndrome, sickle cell anemia among others. Genetic screening is defined as the search or screening for persons with symptomatic diseases with the aim to identify individuals with a genotype that predisposes them