Based on the Encyclopaedia Britannica published by Encyclopaedia Britannica, Inc. in Chicago, USA, this book organizes essential curriculum content that Korean elementary students need to know into a systematic learning structure. Without separating humanities and social studies from natural science, it covers comprehensive knowledge related to each topic, helping to nurture creative individuals with both humanistic imagination and a solid understanding of science and technology. Rather than relying on lengthy text or dry explanations, the book presents a large amount of information through visual images. The infographic at the beginning of each book summarizes the core content through diagrams and illustrations, sparking readers' interest right away. The comic-style narrative that explains the learning content in an entertaining way, along with vibrant photographs, helps readers absorb information quickly and remember it longer. Rather than simply listing isolated facts, the story shows the main characters applying what they've learned to pursue positive values — caring for the environment, respecting differences, and considering the greater good of humanity. Prologue: Meeting the Talking Cat Catsy — 8 01. Heredity Why I Look Like My Parents: Heredity and Traits — 14 Why Baldness Happens / What Are Normal Traits? Cleft Lip and Palate / What Are Abnormal Traits? Dominant Traits That Show, Recessive Traits That Hide — 22 What Is Color Blindness? / Dominant and Recessive Purebred and Hybrid DNA, the Blueprint of Life — 28 Human Chromosomes / Genetic Information Contained in DNA Mendel's Laws of Heredity Revealed Through Pea Experiments — 36 Mendel / Why Mendel Chose Peas Mendel's Laws of Heredity How Did Ancient People Think About Heredity? Mutations and Individual Variation — 44 Types of Mutations Various Genetic Diseases — 50 Progeria, the Disease of Rapid Aging Hemophilia Carriers Rare Genetic Diseases Are Genetically Modified Foods Safe? — 58 Genetic Engineering / Breeding Science Genetically Modified Foods (GMOs) / The Risks of GMOs The Light and Shadow of Genetic Engineering — 68 Transgenic Animals / Advantages and Disadvantages of Genetic Engineering 02. Blood Blood Circulating Through Our Body — 78 What Does the Heart Look Like? / Why Do Veins Look Blue? Components and Functions of Blood — 87 Red Blood Cells and White Blood Cells Platelets' Hemostatic Function and Related Diseases ABO Blood Types and Heredity — 95 Blood Agglutination Reactions / Antigens of ABO Blood Types How Blood Type Testing Works Genotypes and Phenotypes of Blood Types / Inheritance of Blood Types Hematopoietic Stem Cells That Make Blood Rare Blood Types with Curious Names — 107 Cis-AB Type / Various Rare Blood Types Antigen-Antibody Reactions / Rh Blood Type How Is Rh Blood Type Inherited? Do Blood Type and Personality Really Match? — 121 Global Blood Type Distribution / What Is Eugenics? Why Does Personality by Blood Type Feel Accurate? Various Diseases Related to Blood — 133 Blood Pressure / High and Low Blood Pressure Anemia / Leukemia, the Frightening Blood Cancer What Are the Symptoms of Heart Disease? / Foods Good for Blood What to Watch Out for During Blood Transfusions — 141 Animal Blood Transfusions / Transfusions for Rh- Blood Type The History of Blood Banks Epilogue: Sharing Life, Blood Donation — 151 Reading Heredity and Blood Through the Encyclopaedia Britannica Britannica Comic Encyclopedia: Heredity and Blood Written by Bombom Story, Illustrated by Kim Kang-ho Rowoon finds it fascinating that his newborn sibling looks just like their mom while he looks just like their dad, and Seulgi wonders what blood type a baby would have if a person with Type A married a person with Type B. Suddenly, a talking cat named Catsy appears before them! Promising to teach them everything about heredity and blood, Catsy whisks Seulgi and Rowoon away to Dr. Mendel's laboratory. What kinds of discoveries await them there?