Please help on evolution questions!!!!!!?

The "Out of Africa" hypothesis of human origins has been more widely accepted than the "Multi- regional" Hypothesis for which of the following reasons?
1) There have been no discoveries of historically recent archaeological sites containing Neanderthal artefacts
2) There is no evidence of hybridization between modern humans and Neanderthal
3) The common ancestor of humans and chimpanzee occurred only 6 Mya.
4) The common ancestor of all non-African peoples is nested within a clade of African people
5) Human artefacts, discovered throughout Europe, Asia and Africa, have been dated to less than 50000 years ago

Rats living on 2 islands are completely isolated populations. Over time, random drift causes each population to become fixed for a different allele at a gene locus. When a bridge is built, connecting the islands, the rats now travel freely between the islands. Which of the following outcomes is most likely occur?
1) The allele found in the larger island population will also become fixed in the smaller population.
2) The allele frequencies in the two populations will converge on 0.5
3) The mutation rate in both population will increase
4) The allele frequencies in the 2 populations will converge on a value
5) The populations will each remain fixed fro one of the two alleles

Which of the following statements is an important consequence of the Neutral Theory of gene evolution?
1) Alleles causing genetic disease are transmitted in heterozygous individuals.
2) Duplicated genes may evolve different functions
3) The rate of substitutions is constant for all genes
4) The rate of substitution in some genes is relatively constant over time.
5) All populations are in Hardy-Weinberg equilibrium