Final answer:
The DNA sequence TAC TAG TCT AGT is transcribed and then translated into a protein sequence as Methionine-Isoleucine-Arginine-Serine using the genetic code.
Step-by-step explanation:
The DNA sequence provided TAC TAG TCT AGT needs to be first transcribed into mRNA and then translated into a protein sequence. During transcription, the DNA sequence is used as a template to form the complementary mRNA sequence, which is UAC UAG UCU AGU. However, this transcript needs to be corrected to align with the standard process, where Thymine (T) in DNA is replaced with Uracil (U) in mRNA. So, the correct mRNA sequence would be AUG AUC AGA UCA. Then, this mRNA sequence is translated into an amino acid sequence using the genetic code. The corresponding amino acids would be Methionine (Met), Isoleucine (Ile), Arginine (Arg), Serine (Ser). This forms the dipeptide chain Met-Ile-Arg-Ser.