CHEM 2301 Lecture Notes - Lecture 11: Dna Extraction, Galactose, The Lanes
Document Summary
Practice team challenge cells, dna, and chromosomes: your friend has returned from a deep-sea mission and thinks that she found a new, single-celled life form. She believes that this new life form may not have descended from the common ancestor shared by all types of life on earth. You are convinced that she must be incorrect, and to test your hypothesis, you go ahead and extract dna from the cells she has discovered. She says that the mere presence of dna is not enough to prove your hypothesis, as her cells may have adopted dna for purpose unrelated to the storage and transmission of genetic information. She grew half of her cells in the presence of glucose and the other half in the presence of galactose. Then, she harvested the cells and isolated their dna in such a way that their nucleosomes and some higher-order chromatin structures remain intact.
