The same team of researchers sets up an additional cross with this same population. They cross two flies that both have brown bodies. This results in 68 offspring that all have brown bodies.   What assumption(s) can they make about the genotypes of the parental flies? How should they proceed in order to address these assumptions?

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A:

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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.