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Height is a very interesting genetic trait. How tall a person is can be decided on several factors, such as genes for growth hormones and bone proportion. Not only that, but also the environment around someone, their nutrition, and how active they are. However, the predestined height for a person trickles down to just one gene, but can be subject to change a couple inches based upon a persons activity and nutrition. The dominance of this gene is tallness (T) which means that a person will be taller than average height, which for males is around 5'10" and for females about 5'5". With tallness being dominant, shortness (t) is the recessive. One may ask the question, "if this is true, than doesn't that mean that a person can either be tall or short?" While in theory, that may be true for most traits, but height is a little bit different. A male between about 5'10"-6'10" has the T gene, while males between 5'0"-5'8" can have the t gene. Then, there is some overlap between 5'8"-5'10" where the predestined height of a person can either be T or t. So how can a male who is 5'8" have the tt gene and a male who is 5'0" also have the tt gene while there is such a large difference in height? Well, that is just where other factors come in. Some come from genes, such as how fast a person grows or how good of a metabolism system they receive, and some just comes down to how a person eats and how much they excersize. But this means that a 5'8" male may carry the genes to have an off-spring several inches shorter than himself. A male shorter than 5'0" or taller than 5'8" may have some sort of mutation. While a male is the example here, the same is true for women between 4'10"-5'4" having the t gene and women between 5'6"-6'2" having the T gene, and the overlap between 5'4"-5'6". To read more articles like this one, check out http://www.sciencedaily.com/ .
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