Aprotein is composed of one or more long unbranched chains called

A protein is composed of one or more long unbranched chains called polypeptide chains.

Proteins are large biomolecules that consist of one or more long chains of amino acid residues. That linear chain is called a polypeptide. Amino acid residues are bonded together by peptide bonds and the sequence of amino acid chain is coded by the nucleotide sequence of DNA.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.