Question

Examine the information provide below. Then use DNA strand or the amino acid sequence to help construct the missing mRNA strand.

AUG UUU UGU CCC


ATG UUU CGU CCU


ATG AAA CGT CCT


AUG AAA CGU CCU

Answer 1

Ans.

Protein synthesis involves the process of transcription and translation. During transcription parent DNA molecule acts as template and makes mRNA, which is complementary to parent DNA molecule.

According to base pair rule, in RNA adenine (A) binds with uracil (U) and guanine (G) binds with cytosine (c). Therefore, the resulting mRNA sequence will be 'AUG AAA CGU CCU,' when parent DNA sequence is 'TAC TTT GCA GGA.'

The mRNA contains information for the particular amino acids in the form of triplet codons or genetic codes, made up of three nucleotide bases. The genetic codes for given amino acid sequence are:

MET- AUG; LYS-AAA; ARG-CGU; PRO-CCU.

Thus, the correct answer is 'option). AUG AAA CGU CCU.'

Answer 2

According to the information given, the missing mRNA sequence strand is the 4th from the given option which is AUG AAA CGU CCU. As the complementary of A in RNA is U, G is C and for T is A.