1. Genetics
... and find what exactly it was that made this work (The History of Modern Genetics par. 1). In 1869, Johann Friedrich Miescher discovered a slightly acidic chemical. He called the substance nucleic acid, because he found it in the nuclei of human white blood cells. Chemical analysis that was done in 1910 showed that there were two types of nucleic ... acid, called deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). In 1924, microscopic studies using stains for DNA and protein showed that they were both present in chromosomes. Some indirect evidence showed DNA to be related in some ......
- Word Count: 1922
- Approx Pages: 8
- Grade Level: High School