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.
Population:A group of individuals of the same species, the same geographic area, at the same time, regularly interbreed Gene Pool:The collection of all gametes in a population Genotype Frequency: the frequency or proportion of genotypes in a population.llele Frequency: determines how frequent the allele expression of a particular gene arises in a population. Phenotype Frequency: A ratio stating the number of times a specific phenotype occurs in a population.