400 BC
Terms
undefined, object
copy deck
- 400 BC
- hippocrates developed medicine based on empirical observations
- 350 BC
- Aristotle wrote observations of natural world-men to ape-found of biology
- 160 AD
- Galen extended Aristotle and Hippocrates work through careful and systematic anatomical studies-most influential physicians of antiquity
- 1543
- Vesalius published book on human anatomy-foundation for modern medicine and biology
- 1953
- Watson and Crick proposed structure of DNA
- 1839
- Schleiden and Schwann proposed cell theory
- 1628
- Harvey-role of heart in circulation
- 1665
- hooke-discovered cells
- 1673
- van-leeuwenhoek-invented powerful microscope to observe unicellular microorganisms
- 1789
- jenner-vaccination against smallpox
- 1859
- Darwin's theory of evolution
- 1864
- pasteur proposed germ theory
- 1866
- mendel theory of genetic inheritance
- 1928
- Fleming discovered penicillin
- 1963
- genetic code was deciphered
- 1970
- restriction enzymes were discovered
- 1973
- genetic engineering
- 1977
- invention of DNA sequencing techniques
- 1983
- Polymerase chair reaction was invented
- 1990
- Gene therapy developed
- 2000
- human genome mapped
- identical twins
- monozygotic 4 in 1000 births
- fraternal twins
- dizygotic 12 in 1000 births
- zygote
- fertilized egg
- diploid
- all body cells- 2 copies of genes-slight variations due to mutation
- haploid
- gametes-one copy of the gene (sperm & egg)
- meiosis
- mechanism of cell division one copy of every gene is distributed into each gamete
- sickle cell anemia
- abnormal hemoglobin protein
- Cystic Fibrosis
- abnormal allele of a gene encoding a protein normally involved in regulating chloride ion concentration in a cell
- tay sachs
- Abnormal allele of a gene encoding an enzyme that normally metabolizes fat molecules in the brain-fatal by age 3