| Intro to Genetics Read about the work of various scientists who contributed to our understanding of heredity. Click on the names of the scientists to read about their contributions. 1. Using the information that you find, complete the table below. Scientist Contribution Pythagoras Empedocles Aristotle Harvey Leeuwenhoek De Maupertuis Darwin Mendel Morgan Crick and Watson McClintock While performing his research on pea plants, Mendel did not know how traits were passed from parents to offspring. Almost a hundred years later, Watson and Crick identified the molecule that carried the information. Zoom into a segment of a human chromosome found inside a cell's nucleus in "Journey into DNA.". 3. What chemical contains the genetic information in all living things? 4. Why do you think chromatin loops and nucleosomes are useful structures within a chromosome? 5. What kinds of atoms make up a DNA molecule? Since Watson and Crick�s discovery, many scientists have been investigating the function of DNA (deoxyribonucleic acid) . They have determined that sequences of bases in the DNA molecule are �blueprints� for the proteins needed within all organisms. Watch how the sequence of bases in a DNA molecule is used to create complex proteins. First, transcription occurs in the nucleus followed by translation at the ribosomes. 8. What occurs during transcription? 9. What occurs during translation? |