Older adults are most likely to develop shingles, which is why the shingles vaccine is recommended for people age 60 and older. Zostavax is currently the only vaccine approved by the Food and Drug Administration (FDA) to prevent shingles.
Polygenic traits are those traits that are controlled by more than one gene. Such traits may even be controlled by genes located on entirely different chromosomes. Human height, eye and hair color are examples of polygenic traits. Skin color is another polygenic trait for humans and a variety of other animals.
Coat color and pattern is a polygenic trait, meaning it is controlled by more than one gene or gene complex.A dog with the gene for black color expression may also have the gene for suppression of black and so have a red or yellow coat. Polygenic traits are [characteristics of organisms that are] â¦  influenced by several genes.    So multiple alleles are more than two alleles for one trait, and  polygenic traits are one trait that is influenced by mulitple  genes.