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The cloning of genes has made many medical advances possible. Human growth hormone (HGH) is a good example. This hormone is stimulates the growth of bones and muscles during childhood, cloning the gene for HGH has provided an increase in the availability of the hormone. however the availability of HGH and other products of biotechnology raises an ethical question. The hormone is used widely to treat children with dwarfism. That result in an adult height of 4 feet and 10 inches or shorter. Should HGH be available to anyone who wants taller children or only those who have children with dwarfism? Suppose parents want their average-size son to be taller so he will have a better chance of making his high school team, doctors do not have any evidence that exposure to HGH affects average-size children negatively, but many feel it is on ethical to provide it to children with new serious medical needs.