Around 8,000 years ago wild potato's were being harvested by humans in South America. They were from warm regions of Peru, and had tiny tubers. In the 16th century, European's introduced these tiny potato's to Europe. Over time, larger potato varieties appeared. Today, many varieties exist, such as this Idaho potato. Recently, a gene for tuber size was discovered, larger size is related to variation in the gene pool (potato's growing in cooler areas show higher frequencies). Questions: What kind of selection was going on here, why would small tuber size be more common in the tropics, how does founder effect come into play here for our current larger potato varieties? Lastly, what is the point of a tuber in a plant? Original varieties of potato Idaho potato

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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.