Cataracts Facts. 1  Cataracts are changes in clarity of the natural lens inside the eye that gradually degrade visual quality. The natural lens sits behind the colored part of the eye (iris) in the area of the pupil, and cannot be directly seen with the naked eye unless it becomes extremely cloudy.
Hershey and Chase. Alfred Hershey and Martha Chase did an Experiment in 1952 that was called the Hershey-Chase Experiment. This experiment set out to determine what composed the genetic material of a bacteriophage. A bacteriophage is a virus that infects a bacterium.
M ii Jaason (Jason) (Chase) Chase 1 was born in 1582 in Hundridge, Chesham, Buckinghamshire, England. He was christened 20 Jan 1582 - 31 Dec 1582 in Chesham, Buckingham, England. He died on 4 Jun 1606 in Chesham, Buckingham, England. He was buried on 4 Jun 1606 in Chesham, Buckingham, England.