Hybrids Resulting from Matings of Inbred Strains Often Show Heterosis

question 3

Multiple Choice

Hybrids resulting from matings of inbred strains often show heterosis, explained by two different hypotheses, overdominance and dominance. What are the predictions of these hypotheses?

• A) The Overdominance hypothesis relies on dominant/recessive alleles
• B) The Dominance hypothesis relies on the fact that in the F1s, the deleterious effects of recessive alleles are masked by dominant ones

---

Definitions:

Total Utility

The total satisfaction received from consuming a certain amount of a good or service.

Equilibrium Position

A situation where the supply and demand in the market are equal, leading to stable prices.

Indifference Curves

Graphical representations that illustrate combinations of goods that provide the same level of utility or satisfaction to a consumer.

Demand Curve

A graphical representation showing the relationship between the price of a good or service and the quantity demanded for a given period.