I am totally confused by what to do here:
GGG CAT GGT CCT ATT TAC
DNA coding strand sequence:
DNA non-coding strand sequence:
mRNA sequence:
Amino acid sequence:
51. A fragment of mRNA with the sequence 5' ACGCAUGGCAAAAAAAA 3' will have a template DNA sequence that reads
A. 3' UGCGUACCGUUUUUUUU 5'.
B. 3' TTTTTTTTGCCATGCGT 5'.
C. 3' UUUUUUUUGCCATGCGT 5'.
D. 3' TGCGTACCGTTTTTTTT 5'.
To understand what to do with these sequences, let's break it down step by step:
1. DNA coding strand sequence: This is the DNA sequence that contains the coding information for the gene of interest. Each DNA sequence consists of four nucleotides: adenine (A), cytosine (C), guanine (G), and thymine (T). The coding strand sequence is the one that matches the RNA sequence (except that thymine is replaced by uracil in RNA). In this case, the coding strand sequence is not provided.
2. DNA non-coding strand sequence: This is the complementary sequence to the coding strand. It is also made up of the four nucleotides, but each nucleotide on this strand pairs with its complementary base on the coding strand (A with T, C with G). The non-coding strand serves as a template for creating the RNA molecule.
3. mRNA sequence: mRNA (messenger RNA) is a single-stranded RNA molecule transcribed from DNA. It carries the genetic information from the DNA to the ribosomes, where it is translated into a protein. To obtain the mRNA sequence from the DNA non-coding strand, you need to replace each occurrence of thymine (T) with uracil (U).
4. Amino acid sequence: The mRNA sequence is then translated into a specific sequence of amino acids to produce a protein. This is done by grouping the mRNA sequence into sets of three nucleotides called codons. Each codon specifies a specific amino acid. There is a genetic code that translates each codon into its corresponding amino acid. To obtain the amino acid sequence, you need to consult a codon table or use computational tools to determine the corresponding amino acids for each codon in the mRNA sequence.
Without the DNA coding strand sequence, it is not possible to determine the mRNA sequence and subsequently the amino acid sequence. However, if the coding strand sequence is provided, it will be possible to determine the mRNA sequence and the subsequent amino acid sequence using the steps outlined above.