$500 Bill. The Treasury minted several versions of the $500 bill, featuring a portrait of President William McKinley on the front. The last $500 bill rolled off the presses in 1945, and was formally discontinued 24 years later in 1969. Like all the bills featured here, the $500 bill remains legal tender.
Confidence votes 21. Selective breeding has been a way of enhancing preferable genetic qualities in mainly dogs, cats and horses. Often the results can cause mild to severe problems.For example ;breeding for the flat face of the pekingese can cause breathing problems and jaw and teeth deformities.ften the results can cause mild to severe problems.For example ;breeding for the flat face of the pekingese can cause breathing problems and jaw and teeth deformities.
The achondroplasia trait is mainly caused by a single lethal gene, and all Japanese bantams are heterozygous. When the bantams are bred, 25% of the embryos receive two mutant alleles and die before hatching. 50% of the embryos receive one mutant allele and one wild type allele and are shortlegged.