This is a series of chemical reactions that take place in the chloroplasts

Photosynthesis is a series of chemical reactions that take place in the chloroplasts, which are specialized structures found in plant cells. Through this series of reactions, carbon dioxide and water are converted to glucose and oxygen.

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the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.