A3 1 Diversity of Organisms

Visit the website: https://sites.google.com/lpcuwc.edu.h... A3.1 Diversity of Organisms | IB Biology Welcome to Parsons Biology! In this lesson we explore A3.1 Diversity of Organisms from the IB Biology syllabus. We'll investigate how biologists classify the incredible diversity of life on Earth, exploring different species concepts, binomial nomenclature, and the evidence used to determine evolutionary relationships. You'll discover how chromosome comparisons and genomic data have transformed biological classification, examine the process of speciation, and investigate modern techniques such as whole genome sequencing and DNA barcoding. Higher Level students will also explore the limitations of the biological species concept and learn how dichotomous keys and environmental DNA are used to identify organisms and monitor biodiversity. By the end of this lesson, you should be confident with the key understandings, applications and skills required by the IB Biology course. ━━━━━━━━━━━━━━━━━━━━━━ In this lesson • Variation between organisms • Species concepts • Binomial nomenclature • Speciation • Chromosome comparisons and karyotyping • Genome comparisons • Diversity of eukaryotic genomes • Whole genome sequencing • The phylogenetic species concept • Challenges to the biological species concept (HL) • Dichotomous keys (HL) • DNA barcoding and environmental DNA (HL) ━━━━━━━━━━━━━━━━━━━━━━ Chapters 00:00 What is a Species? 12:54 What Chromosomes tell us 16:23 Comparing Genomes 25:00 Exceptions to the Rule (HL) ━━━━━━━━━━━━━━━━━━━━━━ Parsons Biology Making IB Biology clear, engaging and accessible for every student.