Simplify the following text for a Grade 12 native English-speaking person.
Original: Like the genera that Stebbins had previously studied , Crepis commonly hybridized , displayed polyploidy ( chromosome doubling ) , and could make seed without fertilization ( a process known as apomixis ) .
Simplified: Crepis commonly hybridized , displayed polyploidy , and could make seed without fertilization ( a process known as apomixis ) .