The indirect Coombs test finds certain antibodies that are in the liquid part of your blood (serum). These antibodies can attack red blood cells but are not attached to your red blood cells. The indirect Coombs test is commonly done to find antibodies in a recipient's or donor's blood before a transfusion. A test to determine whether a woman has Rh-positive or Rh-negative blood (Rh antibody titer) is done early in pregnancy.
Allele frequency, or gene frequency, is the relative frequency of an allele (variant of a gene) at a particular locus in a population, expressed as a fraction or percentage. Specifically, it is the fraction of all chromosomes in the population that carry that allele.
Overdominance leads to stabilizing selection that maintains both alleles in a population. A) The allele frequency converges to an equilibrium value irrespective of the initial frequency. In the example, w11 = 0.9, w12 = 1 and w22 = 0.8 and the equilibrium frequency of allele A is 0.667.election against a dominant allele present at an initial frequency of 0.70 in a population. The change in frequency of the allele over 100 generations is shown for three different selection coefficients. If s=1.0, the allele is eliminated in one generation.