In part 1, we looked at how DNA in our cells can cause cascades of effects that eventually show up as observable traits, like hair color or sickle cell anemia. As an example, we looked at how a specific group of letters in some people’s DNA can lead, through a series of steps, to those people having blue eyes:
In the first part of this post, I explained how scientists found out in the late 18th century that diamond, graphite, and charcoal were all made of carbon. As a quick explanation of how such different materials could be made of the same element, I put up the following photo, showing that diamond and graphite actually have vastly different structures:
The Airing of Grievances
