Overaeration lungs: Hyperaeration means lungs contain larger amount of air than normally expected. Has many causes. In children can be seen with diseases causing air trapping such as bronchiolitis, asthma, cystic fibrosis, congenital heart disease, early aspiration, and metabolic acidosis.
Barbara McClintock's World Discovering Jumping Genes For the first half of the 20th century, genes were seen as objects with fixed positions on the chromosomes. However, in the 1950s, Barbara McClintock showed that certain DNA fragments, termed transposons, can be activated to jump from one position on a chromosome to another.
slide 1 of 4. The man who discovered DNA, Frederick Miescher, was a young physician who worked in the laboratory of physiological chemistry of eminent scientist Felix Hoppe-Seyler.At the time of the discovery he was 25 years old and had not long graduated from his studies.he man who discovered DNA did not know that it was the hereditary material and he also did not call it DNA. He referred to it as 'nuclein' because it had come from the nucleus. He expected it to be present in organs such as the liver and kidney, and he also believed it to be an acid.