The influential scientist known for research on hormonal influences in development is Dr. Barbara McClintock. Her groundbreaking work in genetics and understanding of transposable elements demonstrated how genes can influence cellular development through hormonal pathways. McClintock's discoveries have had far-reaching implications in biological sciences, particularly in the study of plant genetics and cancer research. She was awarded the Nobel Prize in Physiology or Medicine in 1983, further solidifying her legacy in the scientific community.