Cross-fertilization between strains occurs as gene-laden pollen is carried by bees or blown with the wind from one field to another.
(Cross-fertilization between strains; occurs; T:as gene-laden pollen is carried by bees or blown with the wind from one field to another) (gene-laden pollen; is carried; by bees) (gene-laden pollen; blown; with the wind from one field to another)
Cross-fertilization between strains gene-laden pollen gene-laden pollen
occurs is carried blown
T:as gene-laden pollen is carried by bees or blown with the wind from one field to another
by bees
with the wind from one field to another