Transcript of Timeline of Educational Reform. U.S. Supreme Court announces its decision in the case of Brown v. Board. of Education of Topeka, ruling that separate educational facilities are inherently unequal, thus overturning its previous ruling in the 1896 case of Plessy v. Ferguson.
The antiparallel structure of DNA is important in DNA replication because it replicates the leading strand one way and the lagging strand the other way. During DNA replication the leading strand is replicated continuously whereas the lagging strand is replicated in segments known as Okazaki fragments.
Footballs used in the Super Bowl are marked with DNA to prevent counterfeiting; officials say there's just a 1 in 33 trillion chance of getting the pigskins' genetic sequence right. In recent years, DNA evidence has also been instrumental in identifying human remains.