From Wiki, the Law of Dominance and Uniformity is stated as:
Some alleles are dominant while others are recessive; an organism with at least one dominant allele will display the effect of the dominant allele
We know there is such a thing as incomplete dominance, but the general principle is still amazing.
But why does the Law of Dominance happen in terms of molecules? I googled around, and I didn’t get any clear hits.
In the case of Mendel’s green and yellow alleles for pea color with Green being the dominant allele, does the yellow allele not get translated at all? Seems there has to be some regulatory computational type control to somehow say, “this is a recessive allele, if there is a dominant allele, express that, if not, express this recessive one.”
Maybe there is info on this, but I don’t recall reading anything on this.
The closest related thing I saw was dosage compensation via the XIST lncRNA which shuts down one of the X-chromosomes and the outcome is a calico cat, BUT this isn’t exactly the same thing as what the Law of Dominance is about. It is relevant only in as much it shows one of the many mechanisms to shut down expression of an allele.
Thanks in advance for the responses.