HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The number of chromosomes within each cell of the body.
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The ability of the organism to survive.
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The overall health of the organism.
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The structure of a protein.
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Detailed explanation-1: -Primary structure of a protein refers to the chain of amino acids bonded by the peptide bond. Any change in the nucleotide sequence of DNA alters the genetic codon and thereby alters the amino acid sequence of proteins. So, primary structure is affected by genetic mutations.
Detailed explanation-2: -Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene’s instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.
Detailed explanation-3: -A missense mutation is a point mutation that changes a codon to indicate a different amino acid. This usually changes the polypeptide and therefore can change the function of the overall protein.
Detailed explanation-4: -A genetic mutation will most immediately affect which of the following? The structure of one or more proteins produced by the organism.
Detailed explanation-5: -No; only a small percentage of variants cause genetic disorders-most have no impact on health or development. For example, some variants alter a gene’s DNA sequence but do not change the function of the protein made from the gene.