For a trait such as flower color in snapdragons that is determined by two alleles with incomplete dominance, the offspring of true-breeding parents show an intermediate phenotype. This is also what would be expected of blending inheritance. The difference is that:

the trait with Mendelian inheritance shows segregation in the F2 generation.

Explanation:

Blending inheritance is the theory that the offspring inherits any characteristic that are intermediate between those of the parents.

However, Gregor Johann Mendel showed that this not true that hereditary substances from parents merge together in their offspring.

In the given question,

the offspring of true-breeding parents show an intermediate phenotype, although a trait such as flower color in snapdragons is determined by two alleles with incomplete dominance.

The difference is that the trait with Mendelian inheritance shows segregation in the F2 generation.

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