DOMINANT TRAITit does not require another similar allele to produce it's effect on phenotype. for ex... Tt is tallwhereas RECESSIVE TRAIT produces it's phenotypic effect only in the presence of similar allele. for ex...tt is dwarf...

Difference 1: Expression in Phenotype
- Dominant Traits: These traits are expressed in the phenotype even when only one copy of the allele is present. For example, if the dominant allele for brown eyes (B) is present, the individual will exhibit brown eyes regardless of the second allele (B or b).
- Recessive Traits: Recessive traits require two copies of the allele to be expressed in the phenotype. For instance, a person will only have blue eyes (b) if they inherit two recessive alleles (bb). If they have one dominant allele (B), the blue eye trait will not be expressed.
Difference 2: Frequency in Population
- Dominant Traits: These traits tend to appear more frequently in a population due to their ability to manifest with just one allele. This prevalence can often lead to misconceptions about their superiority or desirability.
- Recessive Traits: These traits are typically less common in a population because they require both alleles to be present for expression. Many recessive traits can be carried by individuals without being expressed, which can contribute to their lower visibility in the population.
In summary, dominant traits are expressed with just one allele and are often more common, while recessive traits require two copies for expression and are usually less frequent in a population. Understanding these differences is crucial in genetics, inheritance patterns, and the study of traits across generations.