Mutations create new alleles
Mutations create new alleles
A mutation is a random change in the base sequence of DNA. When a mutation occurs within a gene, it produces a new allele, which is a different version of that gene.
Step-by-step lessons on Edexcel GCSE Biology 3.4.4 Effects of genetic mutations on phenotype. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.