Ace the DAT 2025 – Your Ultimate Dental Adventure Awaits!

The scenario described illustrates the concept of incomplete dominance. Incomplete dominance occurs when the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes. In this case, if one gene for hair texture represents straight hair and another represents curly hair, the expression of these traits can produce a phenotype that is a blend of both, which is wavy hair.

This blending effect means that neither trait is fully dominant over the other, which is a key characteristic of incomplete dominance. As a result, individuals with one allele for straight hair and one for curly hair exhibit a distinct intermediate phenotype rather than one trait completely overshadowing the other. This concept is fundamentally important in understanding how traits can combine and express themselves in varied ways in offspring.

Other biological concepts mentioned do not align with the situation described. Electrophoresis refers to a laboratory technique used to separate molecules based on size and charge and does not relate to the inheritance of physical traits. Epistasis involves gene interactions where one gene affects the expression of another gene, which is not the primary focus here. Intramembranous ossification pertains to the process of bone formation and is unrelated to hair texture or genetic inheritance.