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Inheritance and Evolution
Quick questions on The Hardy-Weinberg principle: H2 Biology Inheritance and Evolution
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are using the equations?Show answer
A common task starts from the frequency of the recessive phenotype, which equals q squared (the homozygous recessive). Take its square root to find q, then p = 1 - q, then calculate carriers as 2pq and homozygous dominant as p squared.
What is q1?Show answer
In the Hardy-Weinberg equation, state what the term 2pq represents. [1 mark]
What is q2?Show answer
A recessive phenotype has a frequency of 0.09 in a population at equilibrium. Calculate the frequency of the recessive allele. [1 mark]
What is q3?Show answer
State two conditions required for a population to remain in Hardy-Weinberg equilibrium. [2 marks]
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