If frequency, of ' $A$ ' allele is $0.4$ than, find out the frequency of ' $B$ ' allele and heterozygous genotype in a random mating population at equilibria

What is founder effect ?

According to the Neo-Darwinian theory, which of the following is responsible for the origin of new species

Natural selection where more individuals acquire specific character value other than the mean character value, leads to:

Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history ? Do you agree or disagree ? Provide explanation to your answer.