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Who Am I?
Hi I'm Gregor Mandel and I use pea plants to figure out how genetics work. Genetics are the study of heredity. Heredity is what you receive from your parents. My goal is to find out how genetics affect the plant life and future generations. Generations are our relatives that came before us and will come after. Your siblings and you are one generation and your parents are another generation.
My First Discoveries
For my first experiments I hand pollinated some pea plants. Hand pollination is where pollen is being brought to another flower from an insect or the wind. In the first generation, When I pollinated a purple and a purple flower I always got a purple flower. I also mated a white and a white and got a white plant. This is called a true breeding cross.
In the second generation, when I mated a white hybrid and a purple hybrid I got a purple 3/9. A hybrid plant comes from true breeding parents with different forms of the same trait. That means that if there was a purple flower and a white flower they are both colors of flowers but they are different. This is called a first generation hybrid cross. When I crossed the two hybrids, this made me think... why is it mostly purple?
I concluded from the 2nd generation that there is dominant and recessive traits for each plant. When it was purple the purple was dominant to the white. A dominant trait is a trait that blocks another trait. This is the opposite of a recessive trait. A recessive trait is a genetic factor that is blocked by another genetic factor. The dominance differed because people thought that you would get a mix of both the purple and white.
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