Essays on Structure Of DNA

The rediscovery of Mendel's works on heredity in 1900 became the foundation to investigate more on genetics. However, the acceleration of the study of genetics was slow, taking more than half a century later for Watson and Crick to crack the chemical basis of heredity. In fact, their proposal, the double helical structure of DNA, became the beginning of modern biology. Over the next 30 years, the advent of recombinant DNA technology allowed us to sequence specific DNA segments (Collins & McKusick, 2001). Note that mapping specific regions of a particular DNA offers explanations to many traits, including behaviors, disorders, ...

Barbara McClintock was a one time student at Cornell University under the auspices of one C. B. Hutchison, who was lecturing in genetics during the fall in 1921. Genetics had not become a widely accepted course during the time, and students used to study it as a preamble to becoming plant breeders. Having been born in Hartford Connecticut in 1902, she earned her first degree in 1923, her Masters in 1925 and a Doctorate in Philosophy in 1927. Her steady rise as a geneticist was inspired by C. B. Hutchison. She studied the genetic characteristics of maize concentrating on ...

Biology

(Department)

DNA and its importance in our lives

Introduction Deoxyribonucleic acid (DNA) is a long linear polymer located in the nucleus of a cell. It is developed from nucleotides and shaped like a double helix. It is related to the transmission of hereditary information from one generation to the second generation. DNA contains the information for the development as well as reproduction of an organism, thereby leading to a normal life. In the year 1953, James Watson, a biologist, and Francis Crick, a physicist, discovered the structure of DNA in a laboratory in England (LEROY, 2003). The structure of DNA helped scientists to know the process ...