MAMMALIAN GENETICS BCH5413 EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

MAMMALIAN GENETICS BCH5413 EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Why does the mouse die if the researcher mixes the dead pathogenic strain with the live non-pathogenic strain bacteria and then inject it into the mouse? - Answer -Because the DNA was not destroyed, meaning that the pathogenic strain is still able to be taken up by the healthy DNA, causing death What was the only scenario in which the mouse lives? Why? - Answer - When the DNA was completely destroyed; the S strain was no longer able to be pathogenic without its DNA How many angstroms is the distance between stacked base pairs in DNA? - Answer -3.4 ANeed assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: What year was the structure of DNA discovered? - Answer -1953 How did Wilkins and Franklin contribute to the discovery of DNA's structure? - Answer -They did x-ray crystallography to discover the "X" helix pattern of DNA What are the 3 components of a nucleotide? - Answer -A phosphate, a 5-C sugar, and a nitrogenous base How did Watson and Crick contribute to the discovery of DNA's structure? - Answer -They made a model of the structure of helical DNA using others' previous research What is attached to the 1' C in DNA's 5-C sugar? - Answer -A nitrogenous base (A, G, T, or C) Which bases are the purines? - Answer -A and GWhich bases are the pyrimidines? - Answer -C, T, and U T/F: Purines have a double-ring structure while pyrimidines have a single-ring structure. - Answer -True What is attached to the 2' C in DNA's 5-C sugar? - Answer -An -H group (if DNA) or an -OH group (if RNA) What is attached to the 3' C in DNA's 5-C sugar? - Answer -An -OH group (will interact with the phosphate on the 5' C of the next nucleotide) What is attached to the 4' C in DNA's 5-