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30 Cards in this Set

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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