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.
It is found only in bacterial cell walls. It is a complex, interwoven network... Transposons (Jumping Genes): General characteristics and composition. Transposons are pieces of DNA that move readily from one site to another, either within or between the DNAâs of bacteria, plasmids, and bacteriophage.