Common ancestry and nested groups
Common ancestry and nested groups
All organisms alive today share ancestry with earlier organisms. Classification groups them into nested taxa so that the pattern of grouping reflects evolutionary history.
Step-by-step lessons on Eduqas A Level Biology All organisms are related through their evolutionary history. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.