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... people lives. But genetic screening is also causing problems such as the thinning of the gene pool and removing genes that may be beneficial in some unknown future. DNA Deoxyribonucleic acid, or DNA for short, is a long thin chemical which contains genetic instructions for the development and functions of living organisms. DNA is made up of two strands twisted together to made something called a 'double helix'. The helix is held together by hydrogen bonds between the bases and the strands. The part of DNA that has the genetic code for making a particular protein is called a gene. Genes can be found along thread like structures called Chromosomes. These are the packaging system of our DNA that allows 2m to fit in the nucleus of every cell. In the case of humans we have 46 distinct packages, 23 from each parent. Genes Genes are an area of the DNA encoding information ...