Skin color, eye color, height, weight, blood pressure, and many diseases. Proteins include molecules like hemoglobin which carries oxygen in the red blood cells to the tissues. Insulin is a protein which maintains blood glucose levels Proteins are made up of amino acids Alleles Genes can exist in different states, called Alleles.
Alleles are alternative forms of a gene.
DNA DNA is a double stranded molecule, with two strands wound around each other in a double helix formation. Codon Table Genotype versus Phenotype Genotype is the physical sequence or sequences at a locus. Phenotype is the physical expression of the genotype. Sperm and unfertilized eggs are haploid. Most of the Y chromosome is considered haploid.