Which inheritance pattern results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits?

The inheritance pattern that results from blending the traits of pure parents with different alleles is incomplete dominance.

Explanation:

Incomplete dominance is a pattern of inheritance that obviates dominant and recessive traits, such that the offspring express a phenotypic trait that is a mixture of the parental phenotypes.

In this type of non-Mendelian inheritance two pure parents, with different phenotypes for the same trait, have heterozygous descendants with a phenotype that contains the blend of both characteristics.

An example of incomplete dominance is the crossing of white and red flowers where the descendants show as phenotype pink flowers.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds