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.
The rest of the DNA, between the genes, used to be called âjunkâ DNA. It wasnât thought to be important. But we now know that DNA between genes is important for regulating the genes and the genome. For example, it can switch genes on and off at the right time. There is still much more to learn about what it all does.