In a move that could spell the apocalypse for the Big 12 Conference, the Pac-10 is looking to extend offers for membership to Texas, Texas Tech, Texas A&M, Oklahoma and Oklahoma State in addition to already offering Colorado, a source familiar with the negotiations told ESPN.com’s Ted Miller.

Texas legislators had been pushing for Baylor to be the sixth school included, rather than Colorado, but it is believed that the draw of the Denver television market — 16th largest in the country — was the deciding factor.

One Big 12 football coach told ESPN.com’s Mark Schlabach that, should Nebraska accept an invitation to join the Big Ten – and it was reported earlier today that they had – it would lead to the dissolution of the Big 12, according to his athletics director and university president.

Should the six schools receiving offers from the Pac-10 accept them – it likely hinges entirely on Texas’ decision – it would be a doomsday scenario for Kansas and the other four remaining Big 12 teams, which would be left without a conference. NCAA rules state that a conference must have at least six teams with five years of playing experience together, so the remaining five would likely have to separate to find homes.

It is rumored that even if the five Big 12 South schools with offers decline, the Pac-10 will look to expand to 12 teams, with Colorado priority No. 1, according to a report at chicagobreakingsports.com