You identify a gene that controls fin size in zebrafish and after examining many fish you realize that in the population only two alleles exist for this gene. One allele is wild type leading to normal fins, and the other allele leads to small fins. Interestingly, only homozygous dominant individuals have a normal fin size, and all other individuals have small fins. What is the most likely explanation for the single-gene interaction of the fin alleles

The Correct Answer is  "Haploinsufficient"

Explanation:

Haploinsufficiency is a component of activity to clarify a phenotype when a diploid living being has lost one duplicate of a quality and is left with a solitary practical duplicate of that quality. Haploinsufficiency is regularly brought about by lost capacity transformation, in which having just one duplicate of the wild-type allele isn't adequate to deliver the wild-type phenotype.  

It happens when a living being has a solitary utilitarian duplicate of a quality, and that solitary duplicate doesn't create enough item to show the wild sort's phenotypic attributes. The general supposition that will be that the single staying useful duplicate of the quality can't give adequate quality item (regularly a protein) to protect the wild-type phenotype prompting a modified or even infected state.

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