THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
tRNA
|
|
|
DNA
|
|
|
mRNA
|
|
|
rRNA
|
Detailed explanation-1: -An anticodon is a trinucleotide sequence located at one end of a transfer RNA (tRNA) molecule, which is complementary to a corresponding codon in a messenger RNA (mRNA) sequence.
Detailed explanation-2: -At one end, the tRNA has an anticodon of 3’-UAC-5’, and it binds to a codon in an mRNA that has a sequence of 5’-AUG-3’ through complementary base pairing. The other end of the tRNA carries the amino acid methionine (Met), which is the the amino acid specified by the mRNA codon AUG.
Detailed explanation-3: -Each tRNA has a set of three bases on it known as an anti-codon. The anti-codon matches complementary bases in the mRNA sequence. To determine the overall anti-codon sequence that will match a strand of mRNA, simply retranscribe the RNA sequence; in other words, write out the complementary bases.
Detailed explanation-4: -The molecular links between codons and amino acids are the specific tRNA molecules. A particular site on each tRNA forms a three-baseanticodon that is complementary to a specific codon on the mRNA.