Charles Darwin published The Origins of Species.
Mendel's paper about genetics was published but not accepted until 34 years later,
Coined the word "Genetics" for this type of study.
First ever linkage map created by Columbia undergraduate Alfred Sturtevant.
Hermann J. Muller used x-rays to cause artificial gene mutations in Drosophila.
Rosalind Franklin obtained sharp X-ray diffraction photographs of DNA.
DNA is the molecule that mediates heredity, as shown in bacteriophage labeling experiments by Alfred Hershey and Martha Chase. This confirmation of the 1944 results really convinced everyone.
Francis Crick and James Watson solved the three-dimensional structure of the DNA molecule.
The first cloning of a mammal performed by Ian Wilmut and colleagues.
Upon sequencing the human genome, it's discovered that humans have approximately 20,000 to 25,000 genes, far fewer than most scientists had predicted. It is hoped that understanding the genome will boost the fields of medicine and biotechnology, eventually leading to cures for diseases such as cancer and Alzheimer's disease