OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an mRNA molecule has introns and exons in it, where is it?
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At a ribosome
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In the nucleus
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in the rough ER
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could be in the nucleus or the ribosome
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Explanation:
Detailed explanation-1: -Following transcription, new, immature strands of messenger RNA, called pre-mRNA, may contain both introns and exons. The pre-mRNA molecule thus goes through a modification process in the nucleus called splicing during which the noncoding introns are cut out and only the coding exons remain.
Detailed explanation-2: -Introns leave the nucleus while exons are spliced and remain in the nucleus.
Detailed explanation-3: -Answer and Explanation: mRNA that includes introns is processed. mRNA processing occurs in the nucleus. It involves the removal of introns through a process called mRNA splicing.
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