The frequency of alleles in a population that is in Hardy-Weinberg equilibrium 1)changes in each successive generation.
2)is less important than the frequency of genotypes.
3)shows evidence of the process of natural selection.
4)remains the same over several generations.
The answer is either B or D

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.

answer; (b) clear with a slight blue tint;