The answer is
chromosomes
You can cross out somantic cells and genetic mutations and DNA.
Genetic mutations and somatic cells are wrong, so you can cross them out.
Somatic cells: body cells
Genetic mutations: genetic mutations
DNA can't be a big group of genes because genes have DNA in them. So you are left with
A. chromosomes
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❖ The correct answer choice is chromosomes.
Somatic cells are body cells and genetic mutations are what cause genetic disorders and that doesn't happen in everybody. DNA is what makes up genes so that doesn't work. Therefore, chromosomes is correct.
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