HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Exons are included in the protein sequence, while introns are left out
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Introns are included in the protein sequence, while exons are left out
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Exons and Introns can both be included or left out depending on the protein
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Exons and Introns are both part of the mRNA sequence, but only exons are part of the rRNA and tRNA
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Detailed explanation-1: -When genes are transcribed, those exons and introns are included in the initial messenger RNA products. However, introns are removed during the process called splicing so only exons are included in the mature mRNA and used to dictate what proteins are produced.
Detailed explanation-2: -So, the correct answer is ‘Codons are present in mRNA and anticodons in tRNA’.
Detailed explanation-3: -Once splicing is complete, the mature mRNA (containing uninterrupted coding information), is transported to the cytoplasm where ribosomes translate the mRNA into protein. The pre-mRNA transcript contains both introns and exons. The introns are removed during the process of splicing.
Detailed explanation-4: -Which of the following is an incorrect statement about m-RNA? Explanation: Introns are removed and exons are ligated.