Well, let's assume that all these genes are expressed and they're expressed at the same exact rate. Now, what that implies is at the end, we're going to produce twice as many alpha subunits as beta subunits because we have twice as many alpha genes. So if we produce, let's say, 1 million alpha units, we're going to produce only 500,000 of the beta subunits. So twice as less. Now, why is that a problem within our red blood cells? Well, because inside any hemoglobin molecule, we have a one to one correspondence, one to one combination between the alpha and beta subunits.