Natural Selection (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
What is natural selection?
What is natural selection?
Process making organisms better adapted
What is a gene pool?
What is a gene pool?
All alleles of every gene in a population
What are selection pressures?
What are selection pressures?
Factors limiting population size
What is intraspecific competition?
What is intraspecific competition?
Competition within the same species
Why is genetic variation essential for natural selection?
Why is genetic variation essential for natural selection?
It provides basis for evolutionary change
What advantage do large, genetically diverse populations have?
What advantage do large, genetically diverse populations have?
Greater chance of advantageous traits
In the copper tolerance study, what happened in contaminated soils over generations?
In the copper tolerance study, what happened in contaminated soils over generations?
Copper-tolerance alleles increased
What three factors are required for natural selection to occur?
What three factors are required for natural selection to occur?
Over-production, variation, pressures
How do advantageous traits become more common in a population?
How do advantageous traits become more common in a population?
Better-adapted individuals survive & breed