In genetics and molecular biology, a genome can be described as the genetic material of an organism. It entails the DNA (or RNA in RNA viruses). Genome comprises of both genes (coding regions), the noncoding DNA as well as the genomes of the chloroplasts and the mitochondria. Hans Winkler first coined the term ‘genome’. He was a professor of botany at the University of Hamburg in Germany. According to the Oxford dictionary, the word genome is a combination of the words gene and chromosome.