Question

Question 29 2 pts DNA coding strand DNA template strand - The sequence of the peptide that would result from transcribing and translating the gene pictured would be Met-Arg-Leu. Tyr-Ala-Asn. no peptide would be made, the first codon means "stop." lle-Ser-Val. Tyr-Ser-Val.

Answer 1

The sequence of peptide that would result from transcribing and translating the gene pictured would be Met-Arg-Leu because triplet codons on DNA template strand are TAC, GCT and AAT. After transcription, these codons on template strand would form mRNA molecule,which will have AUG, CGA and UUA. The translation of AUG, CGA and UUA codons on mRNA molecule would give rise to a Met-Arg-Leu peptide sequence. Met, Arg and Leu refer to Methionine, Arginine and Leucine.

In order to find out DNA template strand codons and mRNA codons for other amino acids mentioned in question, please refer to the table given below.

Amino Acid	DNA template strand codons	mRNA codons
Arginine	GCA,GCG,GCT,GCC,TCC,TCT	CGA, AGA, AGG, CGG, CGC, CGU
Leucine	GAC, GAT, GAG,GAA, AAC,AAT	CUA, CUG, CUU, CUC, UUG, UUA
Tyrosine	ATG, ATA	UAC, UAU
Alanine	CGT, CGC, CGG,CGA	GCA, GCG, GCC,GCU
Asparagine	TTG,TTA	AAC, AAU
Isoleucine	TAG,TAT, TAA	AUC, AUA, AUU
Serine	TCA,TCG, AGC, AGT, AGG,AGA	UCC,UCA,UCG,AGU,AGC,UCU
Valine	CAT, CAG, CAA, CAC	GUU,GUA,GUC,GUG

ATT, ACT and ATC are DNA template strand codons that mean stop.

DNA template strand is the strand of DNA that acts as template for transcription. Transcription is a process through which RNA molecules are synthesised by DNA-dependent RNA polymerase.