Question

A small segment of DNA is used as a template for transcription. This DNA contains the base sequence CGT. If an mRNA transcript is made from the DNA that includes this sequence, what would be the anticodon on the tRNA that would bind to this corresponding mRNA sequence?

Answer 1

The correct answer is: CGU.

Step-by-step explanation:

Transcription is the process in which a specific DNA segment is taken and copied into RNA. This is highly important since proteins are made thanks to RNA and not DNA.

If an mRNA were to be transcripted using a segment of DNA containing CGT, it would form a GCA codon. The DNA strand serves as a model to synthesize the RNA strand, similar to how DNA replication happens, except RNA ends up having only one strand.

Since mRNA will have a GCA codon, the tRNA anticodon will be CGU (uracil replaces thymine).

Answer 2

GCA

Step-by-step explanation:

Transcription is the process of copying the information in the DNA into an RNA molecule. It is the using of a DNA template to form a messenger RNA (mRNA).

Translation follows transcription, which is the process of using RNA as template to synthesize amino acids sequence (proteins). Translation occurs in the RIBOSOME, with the aid of the transfer RNA (tRNA). The tRNA helps read the mRNA codon with the anticodon that is complementary to the codon sequence.

Hence, if the mRNA codon has a CGT sequence, only a tRNA will ANTICODON sequence GCA, will be able to bind to it.