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 seven super-swingy states are Colorado, Florida, Nevada, Ohio, and Virginia, all of which backed Presidents George W. Bush and Barack Obama two times each, and Iowa and New Hampshire, which voted Democratic in three out of the last four elections.