Complex sentence: Biolistics has proven to be a versatile method of genetic modification as it is generally the preferred method to transform notoriously resistant crops such as cereals, and indeed "bt" maize is a product of biolistics.
Split into simpler sentences: Biolistics has proven to be a versatile method of genetic modification as it is generally the preferred method to engineer notoriously resistant crops such as cereals. Indeed "bt" maize is a product of biolistics.