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10 (a) One gene can have several different alleles - Edexcel - GCSE Biology - Question 10 - 2021 - Paper 1
Question 10
10 (a) One gene can have several different alleles. Explain why these alleles can produce proteins with different structures. (b) Monoclonal antibodies are protein... show full transcript
Worked Solution & Example Answer:10 (a) One gene can have several different alleles - Edexcel - GCSE Biology - Question 10 - 2021 - Paper 1
Step 1
Explain why these alleles can produce proteins with different structures.
Answer
Alleles are different versions of a gene that arise due to mutations, leading to variations in the DNA sequence. Each allele may result in a distinct mRNA strand, which in turn possesses a different sequence of codons or triplets. This variation influences the order of amino acids in the resultant protein, which ultimately determines how the protein folds and its overall structure. Therefore, the structure of the protein can differ significantly depending on which allele is expressed.
Step 2