Complete Dominance
a relationship in which one allele is completely dominant over another
Complete dominance is a term used in genetics to describe the relationship between two versions (alleles) of a single gene. In this type of dominance, the effect of one allele completely masks or overrides the effect of the other allele. This means that individuals with one copy of the dominant allele will display the same trait as those with two copies, while individuals with one copy of the recessive allele will not.
Examples of traits that exhibit complete dominance include flower color in pea plants, where the dominant allele produces purple flowers and the recessive allele produces white flowers. If a plant inherits one copy of the dominant purple allele and one copy of the recessive white allele, it will produce purple flowers because the dominant purple allele completely masks the effect of the recessive white allele.
In humans, examples of traits that exhibit complete dominance include widows peak where a dominant allele produces a pointed hairline, while the recessive allele produces a straight hairline. If an individual inherits one copy of the dominant allele and one copy of the recessive allele, they will exhibit the widows peak trait as the dominant allele completely masks the recessive allele’s effect.
Overall, complete dominance is an important concept in genetics and essential for understanding inheritance patterns in individuals.
More Answers:
Understanding Sex-linked Traits: X-Linked vs Y-Linked Traits in HumansUnderstanding Codominance: Expression of Both Alleles in Heterozygous Organisms
Understanding Incomplete Dominance: The Genetic Phenomenon Explained with Examples