Answer plz asap!


1. GAG as well as GAA both code for glutamic acid. While GUG codes for valine. Thus option D - both reasons are correct.
2. A person with sickle cell trait has the genotype HbA HbS. Thus option a is correct.
3. The person affected with sickle cell anaemia has a homozygous recessive condition. Thus HbSHboption c is the answer.
4. Mutation is affected by radiation (option C is correct). 

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