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.
Transposons (transposable elements or jumping genes (def)) are small pieces of DNA that encode enzymes that transpose the transposon, that is, move it from one DNA location to another, either on the same molecule of DNA or on a different molecule.. Plasmids code for synthesis of a few proteins not coded for by the bacterial chromosome. 4. Transposons (jumping genes) are small pieces of DNA that encode enzymes that enable the transposon to, move from one DNA location to another. 5. Transposons may be found as part of a bacterium's chromosome or in plasmids 6.