Biology A (Salters-Nuffield) A-Level
Multiple loci and allele effects
What Multiple loci and allele effects means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Multiple loci and allele effects
Check what you remember
Read the wording for your board, then hide it and explain Multiple loci and allele effects in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
Each contributing allele adds a small effect, so the combined effect of many loci produces a graded range of phenotypes rather than discrete categories.
Topics that use Multiple loci and allele effects
- Topic 3: Voice of the Genome (Pearson Edexcel A-Level)
Related terms
- Acrosome
- Acrosome reaction
- Cell cycle and interphase
- Continuous variation and normal distribution
- Cortical reaction
- Differential gene expression
- DNA methylation
- DNA replication and sister chromatids
Using Multiple loci and allele effects in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Biology A (Salters-Nuffield) questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Biology A (Salters-Nuffield) A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge