Complex sentence: Dr. Bellen has made numerous important contributions in the field of synaptic transmission in Drosophila, and through unbiased forward genetic screens designed to detect perturbations in neuronal function he has uncovered many genes involved in synaptic transmission or reverse genetics to help to establish their function.
Split into simpler sentences: Dr. Bellen has made numerous important contributions in the field of synaptic transmission in Drosophila. Through unbiased forward genetic screens designed to detect perturbations in neuronal function, he has uncovered many genes involved in synaptic transmission and has used reverse genetics to help to establish their function.