The punnet square is useful for determining the probability of an organism having a certain trait. One of the many pros to using this system is that the probability is easy to calculate and the genetic equations involved are kept extremely simple. When Mendel discovered how to use a punnet square, he created laws that work with it. There are some l was that do not work with the punnet square. Codominance, multiple alleles, incomplete dominance, and polygenic characteristics. These traits of organisms do not follow the punnet square directly and are a major drawback for the system. They turn the simple system of the punnet square into a more complicated equation. Although these are a major drawback, the square is still useful for single allele traits.
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AuthorMichael Tellini Archives
May 2014
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