Most populations on earth are affected by several factors such as a genetic drift mutations and natural selection which statement applies to a population that is experiencing changes in gene frequencies

evolution is occurring in the population

mutations will not affect the population

lethal gene will eventually be expressed

the hardy-weinberg equilibrium is being maintained

The answer is; Evolution is occurring in the population

When the gene frequency is changing in a population it means some gene alleles are being slowly eliminated from successive generations and the other is being favored.  This means that one allele is giving an advantage in the environment while the other is offering a disadvantage. This is natural selection, which powers evolution., in progress.

of those who start drinking before they're 15 will develop alcohol dependence

answer; i believe the correct answer is (anemia);