Genome: twisting stories with DNA

Area of Science:

• Genetics and Genomics
• History of Science

Background:

• The term 'genome' was introduced in 1920 by botanist Hans Winkler.
• This paper traces the conceptual evolution of the genome throughout biological history.

Observation:

• The initial structural definition of the genome as the haploid number of chromosomes has been superseded.
• Technological progress and new understandings of heredity have reshaped the genome concept.

Findings:

• The genome's definition expanded to encompass nuclear material, then the sum of all genes.
• With DNA structure elucidation, the genome became understood as the sum of nucleotide base sequences.
• In the 21st century, the genome is a complex, central concept underpinning 'omics' fields.

Implications:

• The evolving genome concept has paralleled major biological discoveries.
• The modern understanding of the genome fuels powerful heuristic biological research.
• The genome concept is foundational to the rapidly expanding field of 'omics' studies.