A base substitution changes a codon for an enzyme from GCC to GCA. Why is there no change in the amino acid order in the protein?

A protein contains 35 amino acids. How many nucleotides would be found in the mRNA code for this protein?

Oxytocin is a small peptide hormone involved in the process of birthing and lactation. It contains the nine amino acids shown.

CYIQNCPLG

a. How many nucleotides would be found in the mRNA for this protein?

Alpha-melanocyte stimulating hormone (α-MSH) is a 13-amino-acid peptide hormone responsible for pigmentations in hair and skin. Its peptide sequence is shown.

SYSMQHFRWGKPV

a. How many nucleotides would be found in the mRNA for this protein?

Describe how restriction enzymes are used in recombinant DNA technology.

Alpha-melanocyte stimulating hormone (α-MSH) is a 13-amino-acid peptide hormone responsible for pigmentations in hair and skin. Its peptide sequence is shown.

SYSMQHFRWGKPV

b. Suggest an mRNA sequence for the peptide. Show the 5' and 3' ends.

Alpha-melanocyte stimulating hormone (α-MSH) is a 13-amino-acid peptide hormone responsible for pigmentations in hair and skin. Its peptide sequence is shown.

SYSMQHFRWGKPV

c. Suggest a complementary template DNA sequence based on the mRNA sequence suggested in part b.

Name two components common to all viruses.