Question

use the mrna codon table to answer the question. mrna codon chart what dna sequence would code for the tripeptide: leucine - serine - histidine? aac tcg gta aau ucg gua taa gct gtg uug acc cau

Explanation:

Step1: Find mRNA codons

Use the mRNA - codon chart to find the mRNA codons for leucine, serine, and histidine. Leucine has multiple codons, one of which is UUG; serine has multiple codons, one of which is UCG; histidine has the codon CAU.

Step2: Recall DNA - mRNA relationship

Remember that DNA is transcribed into mRNA. The DNA strand that is transcribed is complementary to the mRNA. The base - pairing rules are: A (adenine) in DNA pairs with U (uracil) in mRNA, T (thymine) in DNA pairs with A in mRNA, C (cytosine) in DNA pairs with G (guanine) in mRNA, and G in DNA pairs with C in mRNA.

Step3: Determine DNA sequence

For the mRNA codons UUG - UCG - CAU, the complementary DNA sequence will be AAC - TCG - GTA.

Answer:

AAC - TCG - GTA