The correct answer is B. inbreeding. When a member of a particular species mates with another member from the same species, there is a high probability that there will be something wrong with their offspring. This is one of the reasons why this is frowned upon, especially in human societies.
This is to test for the genotype of an organism that shows the dominant phenotype for a particular trait trait. To perform a testcross in determining the genotype of a plant, a true breeding pink flowering plant is usually utilized.
