GENETICS

  Genetics is study of science of genes, heredity and variation in living organisms. Heredity is the cause of similarity between individuals and variation is the cause of differences between individuals. Genetics deals with transmission of characters from parents to offspring and the molecular structure and function of genes. The study of genes is done at three levels.

.Transmission Genetics

.Population Genetics    

.Molecular Genetics 

TRANSMISSION GENETICS          

The two most fundamental questions in biology are – what is the nature of genetic material and how is it transmitted from parents to offspring? The fact that living things inherit traits from their parents has been used in prehistoric times to improve crop plants and animals through selective breeding. However modern genetics only began with the work of Gregor Mendel. His breeding experiments in pea plants revealed that hereditary characteristics are determined by discrete factors (genes) that are transmitted to the next generation.