THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Introns
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Exons
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DNA
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tRNA
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Detailed explanation-1: -Most splicing occurs between exons on a single RNA transcript, but occasionally trans-splicing occurs, in which exons on different pre-mRNAs are ligated together. The splicing process occurs in cellular machines called spliceosomes, in which the snRNPs are found along with additional proteins.
Detailed explanation-2: -In some genes, not all of the DNA sequence is used to make protein. Introns are noncoding sections of an RNA transcript, or the DNA encoding it, that are spliced out before the RNA molecule is translated into a protein. The sections of DNA (or RNA) that code for proteins are called exons.
Detailed explanation-3: -By definition, exons and introns are sequences in a protein-coding gene region of a double-stranded DNA molecule (dsDNA) that are expressed as proteins, or intervening sequences not so expressed.
Detailed explanation-4: -A gene is a segment of DNA that provides the code to construct a protein.