" What decides the frequency of an allele in a population? "

why does the frequency of an allele in a population changes?

In a population of 100 cats , 36 were white and 64 were black . If the black allele is dominant over white allele , what is the frequency of black allele in this population of cats ?

In a population of 100 cats , 36 were white and 64 were black . If the black allele is dominant over white allele , what is the frequency of black allele in this population of cats ?

In a population of 2000 individuals, 500 belong to genotype AA, 500 to aa and remaining to Aa.. What is the frequency of allele A in this population?

In a population of 2000 individuals, 500 belong to genotype AA, 500 to aa and remaining to Aa.. What is the frequency of allele A in this population?

Presence of recessive trait is 16% .The frequency of dominant allele in population is

If the frequency of recessive phenotype in a stable population is 25% , the frequency of the dominant allele in that population is

According to Hardy-Weinberg's principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?