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.
McClintock and the Ac/Ds Transposable Elements of Corn Barbara McClintock was the first scientist to predict that transposable elements, mobile pieces of the genetic material (DNA), were present in eukaryotic genomes.She performed her work on corn and specifically followed seed color phenotypes.or corn, the outer layer of cells of the endosperm is the aleurone layer. McClintock discovered transposable elements by analyzing genetic stocks of corn that were phenotypically unstable. In particular, she was analyzing genes that control the color of the aleurone layer of the endosperm.