Although all proteins are made from same amino acid explain how your protein may be different from those of dog

Dear student The protein is formed by the translation of mrna formed by DNA having gene. Every gene has specific sequence of bases ( three set of base called codon). The sequnece of codon or base is different for different gene. so the polypeptide sequence form is different and protein formed by this is also different. Simply the gene determine the sequence of codon and codon determine sequence of amino acid and the protein change depend on sequence of amino acid. Regard