Complex sentence: The sequel program consists of seasons 7 onward with the exception of season 10 which reverted back to "The Apprentice"; thusly, "The Apprentice" in and of itself consists of 7 seasons (seasons 1-6; season 10).
Split into simpler sentences: The sequel program consists of seasons 7 onward with the exception of season 10, reverted back to "The Apprentice". Thusly, "The Apprentice" in and of itself consists of 7 seasons (seasons 1-6; season 10).