Question

The dairy farm breeding program uses Mendel's principles but notices that some traits don't follow simple dominant-recessive patterns. The breeding manager explains that Mendel's laws still apply, but additional inheritance patterns exist. What does this reveal about the foundation Mendel provided?
Question 3 options:

Mendel's laws are incorrect and have been replaced by modern theories

Mendel's laws describe fundamental principles that apply even in complex inheritance patterns

Mendel's work only applies to simple traits, not complex characteristics

Modern genetics has nothing in common with Mendel's original discoveries

Answer 1

Answer: "Mendel's laws describe fundamental principles that apply even in complex inheritance patterns." (Option 2)

Brief explanation: Mendel established core principles — segregation of alleles and (for unlinked genes) independent assortment — that remain the foundation of genetics. Modern genetics has extended and refined his work to explain phenomena he didn't observe (incomplete/codominance, polygenic traits, epistasis, linkage, gene–environment interactions, molecular mechanisms), but it does not discard his basic principles. Options 1, 3 and 4 are incorrect because they either dismiss Mendel entirely or limit his relevance; instead his laws are foundational and still apply within a broader, more detailed framework.