please someone help its very urgent
please someone help its very urgent 7. Which of the following best describes the mechanism of microevolution that has altered the human gene pool? a. Natural selection d. Genetic drift due to founder effect b. Sexual selection e. Genetic drift due to bottleneck effect c. Gene flow 8. Provide support for your choice. 9. Despite an abundance of habitat, why might it still be difficult for the human species to recover in numbers? a. Related humans are not able to reproduce. b. The founder effect will slowly kill off the survivors in a small population. c. Modern humans lack the ingenuity needed to survive without an extended social network d. The reduced genetic diversity will make it difficult for the population to adapt to new diseases or other environmental changes. 10. A straggler with green eyes stumbles into this last remaining human outpost. The green eye trait did not exist in the outpost before her arrival, but it does now. What is the name of this mechanism of evolution? a. Natural selection d. Genetic drill due to founder effect b. Sexual selection e. Genetic drift due to bottleneck effect c. Gene flow 11. Provide support for your choice.
7. All of the above are correct
(If only one option needs to be selected, mutation is the major
cause which is backed up by natural selection)
8. Any change in the factors controlling Hardy Weinberg
equilibrium, i.e, mutation, migration, genetic drift and selection
leads to microevolution and cause a change in the allele
9. (d) The reduced genetic diversity will make it difficult for
the population to adapt to new diseases or other environmental
10. (c) Gene flow
11. Gene flow (or migration) refers to the transfer of variation
in terms of alleles into a new population, which is what exactly
happens in this case. The straggler brings in a new allele and thus
variation with respect to eye color.