Inheritance & EvolutionLow Exam FrequencyAQAEdexcelOCRWJEC
Classification
Classification systems, taxonomy, and evolutionary relationships
What you'll cover
- Classification hierarchy
- Binomial nomenclature
- Five kingdom system
- Evolutionary relationships and phylogeny
Study this topic
1Deep Dive2Key Facts3Key Facts4How It Works5Definitions6Misconceptions7Memory Aid8Higher Tier9Exam Focus10Summary11Exam Tips
The Linnaean Classification System
The Three Domain System
Binomial Naming System
How It Works: Classification and Why It Changes
Key Definitions
Common Misconceptions
Memory Aids
Higher The Three-Domain System and Woese's RNA Analysis
Exam Focus
Knowledge Organiser
Exam Tips: Classification
Sample Flashcards
What is biological classification?
The process of sorting organisms into groups based on shared characteristics and evolutionary relationships. Classification helps scientists name, study, and communicate about the huge variety of life on Earth.
How do you correctly write a binomial (scientific) name?
Genus name first with CAPITAL letter, species name second in lower case — e.g. Homo sapiens. Both words are italicised when typed or underlined when handwritten. Example: Felis catus (domestic cat), Panthera leo (lion).
Exam questions for Classification
What is the highest level in the Linnaean classification system?
What is the purpose of classifying living things based on their DNA and genome characteristics?
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