Biology Discoveries
8 discoveries
CRISPR-Cas9 Gene Editing
2012 — Jennifer Doudna, Emmanuelle Charpentier
Development of CRISPR-Cas9 as a programmable genome-editing tool, allowing precise cutting and modification of DNA in living organisms.
Human Genome Project Completion
2003 — Francis Collins, Craig Venter
The full sequencing of the approximately 3 billion base pairs of the human genome, identifying around 20,500 protein-coding genes.
RNA Interference Discovery
1998 — Andrew Fire, Craig Mello
Demonstration that double-stranded RNA can silence gene expression in Caenorhabditis elegans through a mechanism now called RNA interference (RNAi).
Discovery of Telomeres and Telomerase
1985 — Elizabeth Blackburn, Carol Greider
Identification of telomerase, the enzyme that maintains telomere length at chromosome ends, solving the end-replication problem.
Epigenetics and DNA Methylation
1975 — Robin Holliday, Arthur Riggs
Proposal that methylation of cytosine bases in DNA can regulate gene expression without altering the underlying sequence, introducing epigenetic inheritance.
Discovery of DNA Double Helix
1953 — James Watson, Francis Crick, Rosalind Franklin
The elucidation of the double helix structure of deoxyribonucleic acid, revealing how genetic information is physically encoded in all living organisms.
Discovery of Transposons
1948 — Barbara McClintock
Identification of mobile genetic elements (transposons or 'jumping genes') in maize, showing that segments of DNA can change position within the genome.
Mendel's Laws of Inheritance
1866 — Gregor Mendel
Through meticulous breeding experiments with pea plants, Mendel discovered the fundamental laws of inheritance: dominance, segregation, and independent assortment.