THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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5’-AUGGGCAUA-3’
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3’-AUGGGCAUA-5’
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5’-AUGCCGAUA-3’
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5’-ATGCCGATA-3’
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Detailed explanation-1: -The first base of the anticodon in 5’-3’ direction binds with the third base in codon (reading in 5’-3’ direction). Thus, if the base sequence in codon of mRNA is 5’-AUG-3’, the complementary anticodon will be3’-UAC-5’ or 5’-CAU-3’.
Detailed explanation-2: -The anticodon sequence is complementary to the mRNA, using base pairs in the anti-parallel direction. tRNA is read 3’-to-5’, so the sequence would be 3’-UUG-5’.
Detailed explanation-3: -RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5’ to 3’ direction, while reading the template DNA strand in the 3’ to 5’ direction.
Detailed explanation-4: -Strand elongation Once RNA polymerase and its related transcription factors are in place, the single-stranded DNA is exposed and ready for transcription. At this point, RNA polymerase begins moving down the DNA template strand in the 3’ to 5’ direction, and as it does so, it strings together complementary nucleotides.