Epistasis: 1) In violets, purple flower color (P) is dominant over white (p), but there is also a gene that determines if that pigment will be expressed in the petals of the flower. If the plant is “cc” then the purple pigment is not expressed in the petals of the flower, and the flower will be white anyway. a. A plant homozygous for both the purple flower and the control gene is crossed with a plant with white flowers and non-expressed pigment. What is the phenotype and genotype of the offspring in this cross? b. If the plants generated in “A” are allowed to self-pollinate, what is the expected phenotypic rations of the resulting offspring?

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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.