Question 1
Learning objective
Explain gene pool and allele frequency.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Genetics and ecosystems official content
Subtopic
Populations
Aqa A Level BiologyGenetics, populations, evolution and ecosystems
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Quick explanation
Explain gene pool and allele frequency
- This point belongs to Genetics and ecosystems official content, especially Populations.
- You need to be able to explain gene pool and allele frequency.
- The key ideas to know are allele frequency and gene pool.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
allele frequencygene pool
Why it matters
This objective helps connect Populations to exam-style questions, flashcards, and revision notes for Genetics and ecosystems official content.
Quick student answer
What is the gene pool of a population?
Direct answer
The gene pool refers to the total sum of all alleles for all genes present in a population.
Key terms
- Gene Pool: The total collection of genes and their alleles in a population.
- Allele Frequency: The relative frequency of an allele at a genetic locus in a population.
Common trap
Confusing gene pool with individual genotype: Remember that a gene pool refers to the collective genetic information of a population, not just one individual.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Define genotype and phenotype.
Inheritance
- Use dominant, recessive, codominant, homozygous and heterozygous terminology.
Inheritance
- Use fully labelled genetic diagrams for monohybrid and dihybrid crosses.
Inheritance
- Interpret crosses involving sex-linkage, autosomal linkage, multiple alleles and epistasis.
Inheritance
- Use chi-squared testing to compare observed and expected phenotypic ratios.
Inheritance