Home › Maharashtra SSC (Class 10) › Biology › Heredity and Evolution › On a tRNA molecule, the sequence that is complem…
On a tRNA molecule, the sequence that is complementary to the codon on mRNA is called the:
AOperon
BPromoter
CAnticodon
DReplicon
Answer & Solution
Correct answer: C. Anticodon
1. During translation, tRNA delivers amino acids in the order set by the mRNA codons.
2. For each codon, the matching tRNA must carry a complementary sequence.
3. This complementary sequence on tRNA is called the anticodon.
4. So the correct answer is anticodon.
5. Trap (operon): an operon is a cluster of genes in DNA, not a tRNA sequence, so it is wrong.
6. Trap (promoter): a promoter is a DNA region where transcription begins, not part of tRNA.
7. Trap (replicon): a replicon is a unit of DNA replication, unrelated to tRNA pairing.
8. Hence only anticodon fits the complementary codon-pairing role on tRNA.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 1 "Heredity and Evolution", p.11_
Related questions
Which is regarded as the first example of wise-man (Homo sapiens) in human evolution?The wise-man, whose brain was sufficiently evolved about fifty thousand years ago, is knowThe first record of a human-like animal is preserved in the form of which ape from North IApart from genetic variation, which type of isolation is stated to lead to speciation?A species is defined as a group of organisms that can produce fertile individuals through:Which part of Lamarck's theory was rejected after repeated verification?Lamarck used the long neck of the giraffe to illustrate the inheritance of which kind of cLamarck's explanation that an organ becomes strong or weak according to how much it is use