Factors Affecting the Evolution of a Species (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which of the following is a biotic selection pressure?
Which of the following is a biotic selection pressure?
Predation
What is carrying capacity?
What is carrying capacity?
Max population a habitat can support
What does stabilising selection do to a population over time?
What does stabilising selection do to a population over time?
Maintains characteristics at the mean
Why do human birth weights remain stable around a mean value?
Why do human birth weights remain stable around a mean value?
Very small & large babies have higher mortality
How does directional selection differ from stabilising selection?
How does directional selection differ from stabilising selection?
It causes the population to change over time
What happened to finch beak depth after the 1970s drought on Daphne Major?
What happened to finch beak depth after the 1970s drought on Daphne Major?
Increased from 9.4mm to 10.2mm
Where does genetic drift have the greatest impact?
Where does genetic drift have the greatest impact?
In small populations
What causes a genetic bottleneck?
What causes a genetic bottleneck?
Severe population size reduction
What characterises the founder effect?
What characterises the founder effect?
Small group colonises new area
Why does Tasmania have twice the incidence of Huntington's disease?
Why does Tasmania have twice the incidence of Huntington's disease?
Founder effect from one settler