DNA Biology Test Grade 12 Exam With 100% Correct Answers 2024

DNA - correct answer-deoxyribonucleic acid Genes - correct answer-"factors" for specific inherited traits are passed from parent to offspring Alleles - correct answer-alternative versions of a gene Histones - correct answer-special proteins used to wrap a strand of DNA to form a complex Chromatin - correct answer-complexes are bundled together to form thicker fibre strands Plasmids - correct answer-smaller accessory loops of DNA Genome - correct answer-the complete set of an organisms heredity information Diploid - correct answer-has 2 sets of chromosomes Miescher - correct answer-Discovered nuclein Griffith - correct answer-studied the effect of pneumonia bacteria injected into mice S-strain - correct answer-has a smooth protein coating on the exterior and causes death R-strain - correct answer-no protein coating and does not cause death Heat killed S-strain - correct answer-mouse lives heat killed S-strain and R-strain - correct answer-mouse died Transformation (Griffith) - correct answer-live R-strain was converted to virulent S-strain cells when injected with both R-strain and heat killed S-strain Avery, McLeod, and McCarthy - correct answer-confirmed the unknown transforming substance found by Griffith was DNA Hershey and Chase - correct answer-discovered that genetic information was being transferred by DNA not protein