Question

An X-linked gene produces spots on some platyfish. All platyfish have an autosomal repressor that inhibits the expression of the spot-producing gene. The closely related swordtail lacks both the spot-producing gene and the repressor. In backcrosses between these two species, some hybrids receive the spot-producing gene but not the repressor. These individuals can develop malignant tumors, because the expression of the spot-producing gene is not properly regulated. This appears to be an example of__________.

Answer 1

The correct answer is - The Dobzhansky-Muller Model.

Step-by-step explanation:

The Dobzhansky- muller model is a model that explains about how the natural selection influences speciation or reproductive isolation in a specific process when hybridization takes place between 2 species of an organism.

The offspring that produce through this process is an incompatibility with other species of origin. In the given question, spotted platyfish that arise due to the X linked gene exhibits the Dobzhansky-muller model.

Thus, the correct answer is - The Dobzhansky-Muller Model.