BIO 112~ Exam Review Latest Version with Verified Solutions

BIO 112~ Exam Review Latest Version with Verified Solutions One definition of evolution is that evolution is "descent with modification". What does "modification" refer to in this definition? (1) Mutation and (2) Sexual Mixing What is the only statement that is NOT true about the genetic relatedness of life on Earth? Gorillas are the closest living relative to humans All but one feature listed below are shared between family trees and phylogenetic trees. Represent populations on each branch Which of the following is the only TRUE statement about the origins of the Homo genus? All species in the genus but one are currently extinct 85% is the approximate... ...amount of variation in local human populations Which of the following is the only statement that is TRUE about human evolution and diversity? Human population is about ten times less diverse than chimp population Which of the following is the only factor that would lead to a distinct sub-species/race (one that is distinct from other members of the species)? Reproductive isolation Which of the following is the only statement that is NOT true about human races? Human beings are the only species where sub-species/races can never form True statements about human races: (1) The movement of human beings makes it harder for sub-species/races to form, (2) Human sub-species/races have not formed, and (3) There is no combination of traits that is concordant with a human sub-species/race. What is the best definition of phenotype? Any characteristics of an organism If one organism has a mutation (that another organism does not have), that means that they will have at least some difference in at least one trait. False Which of the following is the only feature of organisms that is NOT a trait? The DNA/genes inside the cells Features/Examples of traits: (1) The ability to destroy warfarin (anti-clotting drug) function, (2) The skin color, and (3) The ability to play the piano. Phenotype is on the outside, genotype is on the inside False Traits are neither: Genes nor Alleles What is the best term to describe when two organisms have the following combination: -the same genetics -different environments -different traits (different in the sense that for the trait "eye color" one could have brown, green, or blue eyes) Phenotypic plasticity Which of the following is the only statement about human genetics that is NOT generally true? The two homologs have two different alleles for each gene (e.g., for the gene that metabolizes warfarin)