Explanation:

Dominance is a term used to describe the relationship between alleles of a gene. An allele is a variation of a gene that can produce different phenotypes (observable traits). In some cases, one allele may be dominant over another allele, meaning that it will be expressed in the phenotype even if only one copy is present in the organism's genome. The other allele is said to be recessive, meaning that it will only be expressed if two copies are present.

However, dominance is not an autonomous feature of a gene or its product. It depends on various factors that influence the expression of the gene or the phenotype that we choose to examine.

Factors influencing dominance:

1. Gene product: The product of a gene can interact with other molecules in the cell to produce a particular phenotype. The dominance of an allele can depend on the effect of its product on the cellular environment. For example, in the case of incomplete dominance, the phenotype is a blend of both alleles because the gene product of each allele contributes equally to the phenotype.

2. Gene expression: The level of expression of a gene can also influence its dominance. If one allele is expressed at a higher level than another allele, it may be dominant over the other allele.

3. Environmental factors: The expression of a gene can be influenced by environmental factors such as temperature, light, or nutrient availability. In some cases, an allele may be dominant in one environment but recessive in another environment.

4. Multiple phenotypes: Some genes can influence more than one phenotype. In such cases, the dominance of an allele may depend on the particular phenotype that we choose to examine. For example, the allele for sickle cell anemia is recessive for the phenotype of normal hemoglobin, but it is dominant for the phenotype of resistance to malaria.

Conclusion:

In conclusion, dominance is not an autonomous feature of a gene or its product. It depends on various factors that influence gene expression and the phenotype that we choose to examine. Therefore, it is important to consider these factors when studying the inheritance of traits and the relationship between alleles of a gene.

dominance is not autonomous because there can be occurrence of phenomenon like polygenes or incomplete dominance / co dominance which will affect the genes.