Last Minute Lecture

The Chromosomal Basis of Inheritance — Sex-Linked Traits, Linked Genes, and Genetic Disorders Explained | Chapter 15 of Campbell Biology Welcome to Last Minute Lecture! This post covers the chromosomal basis of inheritance, connecting Mendel’s laws to the behavior of chromosomes as described in Chapter 15 of Campbell Biology . Discover how genes are located on chromosomes, how sex-linked traits and linked genes are inherited, and how chromosomal alterations can result in genetic disorders. Watch the full video summary below and subscribe for clear, chapter-by-chapter genetics insights! Introduction: Chromosomes as the Carriers of Genetic Information The chromosome theory of inheritance links Mendel’s discoveries to chromosome behavior during meiosis, explaining how genes are transmitted from parents to offspring. Chromosomes segregate and assort independently, underlying the patterns of inheritance observed by Mendel. Sex-Linked Inheritance Sex-Linked Genes: Located ...

How Genes and Environment Shape Development — Summary of Chapter 3 from The Developing Person Through the Life Span How much of who we are is determined by our DNA? How do external factors like nutrition or culture interact with genetics? Chapter 3 of Kathleen Stassen Berger’s The Developing Person Through the Life Span explores the fascinating relationship between genes, environment, and human development. This chapter provides essential insights into how genetic blueprints and life experiences collaborate to shape individual traits, behaviors, and health outcomes. Watch the full summary above or read below for a detailed breakdown of key concepts, from DNA to epigenetics to ethical debates around gene editing. The Blueprint: Genes and DNA At the foundation of human development are genes —segments of DNA located on chromosomes . Humans have 46 chromosomes arranged in 23 pairs. Each gene may exist in different forms, known as alleles , which lead to variations in traits s...