Genetics - Lesson 1.pdf

Ms. Rica Abigail T. Dagos College of Teacher Education Occidental Mindoro State College – San Jose Campus LEARNING OUTCOMES: genetics  genetics  Hereditary characteristics were determined by “elementary factors” 1. The gene is inherited from gene...

Ms. Rica Abigail T. Dagos College of Teacher Education Occidental Mindoro State College – San Jose Campus LEARNING OUTCOMES: genetics  genetics  Hereditary characteristics were determined by “elementary factors” 1. The gene is inherited from generation to generation in such a fashion that each progeny has a physical copy of this material. 2. The gene provides information regarding the structure, function, and other biological properties of the characteristic or trait it controls..  By Aristotle Semen was found everywhere in a man’s body The semen reflected the characteristics of the body parts from which it was formed Accepted by many biologists including Darwin and Lamarck  Fundamental mechanism of evolutionary change  August Weismann From his experiment to challenge the Pangenesis theory sex cells perpetuated themselves in reproduction generation after generation  Diversity in the offsprings of hybrids Accounted for the numerical ratios of phenotypes and genotypes  Independently duplicated Mendel’s experiments in various plant species Re-discoverers of Mendel Proved that Mendel’s discovery can also be applied in animals  Walter Sutton and Theodor Boveri From the association of the Mendelian factors with the chromosomes Segregation of Mendelian factors is paralleled by the separation of homologous chromosomes in meiosis  Thomas Hunt Morgan and Calvin Bridges Each chromosome contained many genes Oswald Avery, Collin MacLeod, Maclyn McCarthy Rosalind Franklin, James Watson, Francis Crick BRANCHES OF GENETICS Molecular genetics CYTOGENETICS Human genetics Pre – implantation genetics Clinical genetics Plant genetics. Microbial genetics Metagenomics Population genetics Epigenetics Biochemical genetics Physiological genetics Quantitative genetics Conservation genetics Behavioral genetics