Essays on Crick

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, ...

Abstract

The purpose of this study was to examine whether gender differences in aggression exist among kindergarten children. Two hypotheses guided this study: (a) There is no significant relationship between males and females on aggression (b) There is no significant relationship between children’s physical aggression and relational aggression. The observational research design was used to address these hypotheses. A purposive sample of 50 children (30 boys and 20 girls) were recruited for the study and data gathered by observation. From the analysis of data, statistically significant relationship between physical aggression and relational aggression in children was found. Moreover, results ...

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 ...

I am an individual with varied interests. However, I have always remained fascinated by the science of the DNA Double Helix.  My fascination in DNA Double Helix and its functionality goes back to the 6th grade when I stumbled over my cousin’s biology assignments on the structure and functionality of the DNA Double Helix. I remember asking him to explain it to me. He said a lot of staff I could not understand then, but the only thing that caught my attention is conservative nature of DNA Double Helix. My focus on the DNA Double Helix grew fonder ...

It was not until 1953 that the biological science was better understood. Earlier on scientists had tried so much to definite the structure of nucleic acid. With the help of information by other scientists Watson and Crick were able to discover that Deoxyribonucleic acid DNA exists in the shape of a three dimensional double helix. From late 19th there were various researches to determine the components of the molecule. DNA was first discovered in 1869 by a Swiss physiological chemist Friedrich Miescher, he was able to locate nucleon in the nuclei of white blood cells. The name Nuclein ...