F1 offspring of Mendel's classic pea crosses always looked like one of the two parental varieties because of the complete dominance of one allek - over another. Many characteristics in a variety of organisms show this mode of inheritance. But many others do not. They may show another phenomenon of inheritance called incomplete dominance or intermediate inheritance. It is a phenomenon of inheritance in which dominant - alleles of contrasting characters are not completely dominant over other resulting that heterozygous individuals have phenotypes in between two contrasting or blending of characters occurs in heterozygous condition.
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