Allele Frequency (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What does allele frequency measure?
What does allele frequency measure?
How often an allele occurs in a gene pool
What does the gene pool contain?
What does the gene pool contain?
All alleles of all genes in a population
What does the gene pool represent?
What does the gene pool represent?
Total genetic variation in a population
How does selection affect allele frequencies?
How does selection affect allele frequencies?
Through environmental pressures
What happens to organisms with a selective advantage?
What happens to organisms with a selective advantage?
More likely to survive and reproduce
What do environmental factors NOT do to alleles?
What do environmental factors NOT do to alleles?
Create new alleles
What process introduces new alleles into a gene pool?
What process introduces new alleles into a gene pool?
Mutation
How is evolution by natural selection defined?
How is evolution by natural selection defined?
Change in allelic frequencies over time
At what level does evolution occur?
At what level does evolution occur?
Population level
What do selection pressures act on?
What do selection pressures act on?
Phenotypes