Pedigree. Here is a pedigree depicting X-linked recessive inheritance. These traits are often passed from a carrier mother to an affected son. X-linked traits are never passed from father to son.
Swing state definition, a state of the U.S. in which the Democratic and Republican candidates both have a good chance of winning and that is considered key to the outcome of a presidential election: the swing states of Ohio and Indiana. See more.
The terms swing state, battleground state, and purple state are like three friends talking about the same thing, but from different perspectives. Each term describes a state that is closely divided between Democratic and Republican voters and could go either way in an election, but each points up different aspects of a political contest.