Question

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?
○ incomplete dominance
○ codominance
○ mendelian inheritance
○ polygenic inheritance

Explanation:

To solve this, we analyze each option:

• Incomplete dominance: Occurs when heterozygous offspring show a phenotype that is a blend of the two homozygous parental traits (e.g., red and white flowers producing pink offspring).
• Codominance: Both parental traits are fully expressed in the offspring (e.g., blood type AB, where both A and B antigens are present), not a blend.
• Mendelian inheritance: Follows dominant/recessive patterns, with one trait masking the other (no blending).
• Polygenic inheritance: Involves multiple genes contributing to a trait (e.g., height), not a blend of two parental traits.

The description of "traits that appear to be a blend" matches incomplete dominance.

Answer:

A. incomplete dominance