Genetics Timeline

Main

Mendel's Paper Is Published

1866

Units of inheritance in pairs, dominance and recessiveness, equal segregation, independent assortment. These ideas weren't recognized for 34 years.

Mendel's Experiments From 1866 Rediscovered

1900

Experiments from 1866 are rediscovered and confirmed by three separate researchers one Dutch, one German, and one Austrian. William Bateson soon translates Mendel's paper into English.

T.H. Morgan and Colleagues Fly Eye Color

1910

The chromosome theory of heredity is confirmed in studies of fly eye color inheritance

X-rays Induce Mutations

1925

H. Muller shows that X-rays induce mutations in a dose-dependent fashion.

Heat-killed Virulent Bacteria

1928

Some component of heat-killed virulent bacteria can "transform" a non-virulent strain to become virulent, as shown by Fred Griffith. This sets the stage for work done in 1944.

DNA

1950

In DNA, there are equal amounts of A and T, and equal amounts of C and G, but the A+T to C+G ratio can differ between organisms.

Genetic Code Cracked

1966

The genetic code is cracked by a number of researchers using RNA homopolymer and heteropolymer experiments as well as RNA labeling experiments.

Kary Mullis

1986

PCR is developed by Kary Mullis

Genome Projects Accelerate

1995

Automated sequencing technology allows genome projects to accelerate

Human and Animal Closing

2009

Controversies continue over human and animal cloning, research on stem cells, and genetic modification of crops.