例句與造句

1. Garden tomatoes have been subjected to a breeding program using introgression lines of genetically modified organisms ( but not incorporating them in the final purple tomato ) to define the genetic basis of purple coloration in wild species originally from Chile and the Galapagos Islands.
2. Solanum section Lycopersicoides and section Juglandifolium are represented by two species each that are considered bridge species genetically intermediate between tomato and non-tuber bearing potato species . " S . lycopersicoides " can be crossed with domestic tomato and introgression lines have been developed.
3. It's difficult to find introgression line in a sentence. 用introgression line造句挺難的