Which statement summarizes the relationship between DNA, proteins, and amino acids? The DNA molecule is a protein formed by amino acids that are linked together by peptide bonds.
The type of protein that composes DNA codes for the twenty different amino acids.
The sequence of amino acids in DNA determines the type of protein formed during protein synthesis.
The sequence of nucleotides in DNA codes for specific amino acids which bond to form proteins.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

its probably to later but whats the question