2. Models help us develop testable hypotheses because models A. based on things we have never seen
B. very complex and time consuming
C. make out observations more reliable
D. show the relationship between parts of a whole

Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species