BIO 242 Final Exam 2026 – Evolution, Genetics, DNA Replication & Speciation | 90 Key Terms

This BIO 242 Final Exam 2026 study guide contains 90 clearly defined exam questions with 100% correct answers covering core concepts in evolution, genetics, molecular biology, and cell division. The document includes structured definitions and explanations of natural selection, genetic drift, bottleneck and founder effects, speciation (allopatric and sympatric), adaptive radiation, phylogenetics, and coevolution, along with molecular biology topics such as DNA structure, transcription, translation, gene regulation, mutations, and protein structure. The material provides a comprehensive, terminology-focused review aligned with introductory and intermediate biology curricula. It thoroughly covers evolutionary mechanisms (directional, stabilizing, disruptive selection), population genetics concepts (allele frequency change, gene flow, reproductive isolation), phylogenetic tree interpretation (nodes, clades, most recent common ancestor), and endosymbiont theory evidence. Molecular genetics sections include nucleotide structure, complementary base pairing, semiconservative replication, central dogma, operons, enhancers, repressors, genome organization, and chromosome structure. Additionally, it reviews mitosis, meiosis, crossing over, independent assortment, fertilization, mutation types (missense, nonsense, silent, insertion, deletion), and experimental design fundamentals including hypothesis testing, independent and dependent variables, and controls. This document is highly suitable for: Pre-nursing students enrolled in General Biology II Pre-med and pre-health science students Biology majors completing Evolution and Genetics courses Students taking BIO 242 (General Biology II or Principles of Biology II) Allied health students preparing for cumulative biology finals Students reviewing for comprehensive departmental biology exams It is especially relevant for courses such as: General Biology II Evolutionary Biology Genetics Molecular and Cell Biology Introduction to Biotechnology Pre-Health Science Foundations The concise question-and-answer structure makes this guide ideal for rapid review, active recall practice, final exam preparation, and reinforcement of essential biological terminology and mechanisms frequently tested on cumulative biology examinations. Keywords: evolution, natural selection, fitness, mutation, genetic variation, directional selection, stabilizing selection, disruptive selection, genetic drift, bottleneck effect, founder effect, gene flow, speciation, allopatric speciation, sympatric speciation, adaptive radiation, phylogenetic tree, clade, endosymbiont theory, protein structure levels, peptide bond, DNA structure, nucleotide, complementary base pairing, semiconservative replication, central dogma, transcription, translation, gene regulation, operon, mitosis, meiosis, crossing over, independent assortment, mutation types, scientific method