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BIO 121 Exam 3 study guide 2025 Questions and Answers Central dogma - ....ANSWER☑️☑️...-describes how genetic information provides info for cells Nucleotide - ....ANSWER☑️☑️...-monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base Heredity - ....ANSWER☑️☑️...-Passing of traits from parents to offspring Frederick Griffith (1928) - ....ANSWER☑️☑️...-discovered transformation in bacteria Avery, MacLeod, McCarty (1944) - ....ANSWER☑️☑️...-Repeated Griffith's experiment using purified cell extracts Removal of all protein from the transforming material did not destroy its ability to transform R strain cells DNA-digesting enzymes destroyed all transforming ability Supported DNA as the genetic material Hershey-Chase (1952) - ....ANSWER☑️☑️...-concluded that the genetic material of the bacteriophage was DNA, not protein. Rosalind Franklin (1952) - ....ANSWER☑️☑️...-Took an x- ray photo of DNA that shows it looks like a helix. Watson & Crick (1953) - ....ANSWER☑️☑️...-determined double helix structure of DNA FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1