Study for the Life in the United Kingdom Test. Prepare with flashcards and multiple choice questions, each offering hints and explanations. Get ready for your exam!

Multiple Choice

Which discovery is associated with Francis Crick?

Francis Crick is best known for helping to reveal the double-helix structure of DNA, the molecule that stores genetic information. In 1953, he and James Watson proposed that DNA consists of two long strands forming a twisted ladder, with specific base pairing (A with T, C with G) that explains how genetic information is replicated and passed on. This discovery clarified how heredity works at a molecular level and laid the foundation for modern biology. Other options relate to different fields entirely—gravity is a physics discovery, penicillin is an antibiotic discovered by Fleming, and the periodic table was developed by Mendeleev—so they aren’t associated with Crick.

Francis Crick is best known for helping to reveal the double-helix structure of DNA, the molecule that stores genetic information. In 1953, he and James Watson proposed that DNA consists of two long strands forming a twisted ladder, with specific base pairing (A with T, C with G) that explains how genetic information is replicated and passed on. This discovery clarified how heredity works at a molecular level and laid the foundation for modern biology. Other options relate to different fields entirely—gravity is a physics discovery, penicillin is an antibiotic discovered by Fleming, and the periodic table was developed by Mendeleev—so they aren’t associated with Crick.