When you test cross DdSsNn, you obtain the following numbers of offspring with the following phenotypes out of a total of 1449 offspring: DSN     427 dsn      447 dSN     218 Dsn      210 DSn      68 dsN      71 dSn      6 DsN     2 A. Calculate the distances between D and S. Show your work.   B. Calculate the distances between S and N. Show your work.   C. How many double crossovers would you expect if there were no interference? Show your work.   D. Calculate the coefficient of coincidence and interference based upon your answer in part C. Show your work.

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.