Unit 4 - Genetic information, variation and relationships between organisms
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Summary Ch 10 Biodiversity notes A* AQA A Level Biology
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Unit 4 - Genetic information, variation and relationships between organisms
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AQA
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AQA Biology A Level Year 2 Student Book
A set of thorough and concise notes created and used by an A* grade student to revise Biodiversity (ch 10 from the A Level AQA Biology course). The notes are detailed and clearly explain the topic by breaking each process down into steps. It includes clear and detailed diagrams and includes all con...
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Unit 4 - Genetic information, variation and relationships between organisms
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10.1 Species and
taxonomy
,Key words
• Species: group of individuals that are able to breed and produce
living, fertile offspring
• Binomial system: naming system involves animals having a two-par
Latin name. 1st is their genus [generic name], but 2nd is species
[specific name]. E.g. Felix Tigris.
• Biological classification: can be grouped in 2 ways, artificial
[usefulness] classification or phylogenic [ancestral] classification
,Binomial naming system
• 2 names in Latin
• 1st word = genus [capitalised]
• 2nd word = species
• E.g. Panthera leo [printed]
• Or Panthera leo [handwritten]
• Universal naming system to name species the same across all
countries
, Courtship behaviour
• Members of the same species resemble each other physically,
biochemically and behaviourally
• This helps them distinguish members of their species from others
• Courtship behaviour is important to ensure mating success to maximise
change of survival for offspring
• Courtship behaviours allow them to:
• Recognise members of their own species
• Identify a mate that is capable of breeding [sexually mature, fertile]
• Form a pair bond [successful mating & raising offspring]
• Synchronise mating
• Become able to breed
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