Speciation (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a population's gene pool contain?
What does a population's gene pool contain?
All alleles from all genes in all individuals
What is evolution by natural selection in terms of allelic frequency?
What is evolution by natural selection in terms of allelic frequency?
A change in allelic frequencies over time
What is a key characteristic that defines a species?
What is a key characteristic that defines a species?
Can interbreed to produce fertile offspring
How does speciation primarily occur?
How does speciation primarily occur?
Reproductive separation + genetic changes
Why is genetic drift more pronounced in small populations?
Why is genetic drift more pronounced in small populations?
Each individual's contribution has greater weight
What does allopatric speciation involve?
What does allopatric speciation involve?
Geographic separation by physical barriers
What characterises sympatric speciation?
What characterises sympatric speciation?
Formation in same geographical area
What adaptation occurred in Galapagos finches during allopatric speciation?
What adaptation occurred in Galapagos finches during allopatric speciation?
Different beak shapes for various seeds
Which isolation type involves different breeding seasons preventing mating?
Which isolation type involves different breeding seasons preventing mating?
Temporal isolation
Why are mules (horse-donkey offspring) sterile?
Why are mules (horse-donkey offspring) sterile?
63 chromosomes cannot pair correctly in meiosis