Final answer:
The tendency for opposites to mate and/or marry is not supported by most of the scientific literature. Assortative mating, where individuals choose mates that are similar to themselves in some way, is a common pattern in many species, including humans.
Step-by-step explanation:
The statement that the tendency for opposites to mate and/or marry being supported by most of the scientific literature is false.
In biology, there is a concept called assortative mating, which refers to individuals choosing mates that are similar to themselves in some way. This can include traits such as physical appearance, behavior, or genetic makeup. Assortative mating is common in many species and can have various evolutionary implications.
An example of assortative mating in humans is people choosing partners who share a similar cultural background, as shown in Figure 12.27. However, it is important to note that there is also variation in mating patterns, and individuals may mate with those who are different from themselves. Overall, the scientific literature supports a combination of both assortative mating and non-assortative mating in different populations.