However, the idea of blending could not account for the appearance of unexpected traits in some offspring. It was not until scientist discovered the cellular basis of life that the inheritance of traits was better understood. The first clues to understanding inheritance came from Gregory Mendel, one of the most outstanding scientists in the field of genetics. Mendel, an Austrian monk, began his work in the 1860’s. He used garden pea plants to study how traits were passed from one generation to another.
First, we evaluated our data on monohybrid and dihybrid corn cross seed counts against Mendel’s theoretical expectations of independent assortment and the segregation of alleles. Next, we used the Hardy-Weinberg Theorem to provide a theoretically expected value for allele frequencies for single human gene traits. Lastly, we dealt with Drosophila melanogaster and we examined red and white eye alleles to determine if this gene is sex-linked or autosomal. During the mid 1800’s Mendel bred garden peas to study inheritance. He choose these plants because of their well defined characteristics and the ability to be grown and crossed (Campbell, 1996).
(2014, February 7). Regulation of Genetic Tests. Retrieved April 24, 2014, from http://www.genome.gov/10002335 Types of Genetic Testing | Medindia. (n.d.). Medindia.
Available from: www.agscientific.com/molecular-biology/molecular-biology.html. 5. International Union of Biochemistry and Molecular Biology. [Online]. ; 2002 [cited 2014 April 21. Available from: onlinelibrary.wiley.com/store.
Web. 19 Nov. 2013. Richert, Scott P. King Lear / By Scott P. Richert. n.p. : 1.1.55-60 : New York : Marshall Cavendish Benchmark, 2011., 2011.
Genetics are the essence of life they are what make up you and your traits and everything about you. They are what connect you and your parents. You inherit all of your traits from each of your parents. They pass them to you from there chromosomes which have the genes on them. Genetics can be helpful in many ways such as in gene therapy you can know if your child will have genetic disorder and also in genetic engineering you can make it so plants are immune to diseases.
DNA tells us who we are and what we are and tell us what everything around us are too. The world can't be known if we do not understand what DNA is. DNA is the building life in the living system. Without DNA we would not be able to tell what apart from what. People been trying to find out what DNA look likes for years.
The term “nuclein” was later changed to “nucleic acid” and eventually to “Deoxyribonucleic Acid” or “DNA.” At this point, many scientists did not realize how important this information was, therefore many ignored this information. Then, in 1919, an American biochemist named Phoebus Levene laid the groundwork for the future studies of DNA. He was the first to identify and explain how the nucleic acid components, sugar and phosphate, combine to form nucleotides. Next, Erwin Chargaff, a student of Cambridge, fortified the foundation of studies that had already been made. He created a set of rules called “Chargaff’s rules.” The first rule he established is that, in human DNA, the number of adenine components equals the number of thymine components and the number of guanine components equals the number of cytosine components.
The continuity of life is based on heritable information in the form of DNA and is transferred from one generation to another. According to ‘The Free Dictionary by Farlex’ the definition of heredity is: “1. (Biology) the transmission from one generation to another of genetic factors that determine individual characteristics: responsible for the resemblances between parents and offspring.” The continuity of life is based on this fact and will be discussed in this essay. This is tied very close to genetics an area of biological study interested in hereditary traits. For many years people had a common understanding about genetic inheritance and that it consists of certain traits that are passed along one generation to the next, but it was mostly subjective and due to casual observation and not scientific study.