QUIZ 1. Forces in evolution can change the frequency of each of these things in a population except for what? a. Alleles b. Genotypes c. Phenotypes d. Genomes Answer: d. Genomes is a concept that is defined as the totality of the genes in an organism. The frequency of genomes does not change but the alleles, genotypes, and phenotypes will change in frequency in the genome of members of the population. 2. What is the earliest change in a population that has suggested that evolution has occurred? a. Change in habitat b. Change in an allele frequency c. Change in gender frequencies d. Change in the population size Answer: b. A change in the frequency of an allele is most likely to be the earliest evidence that evolution has occurred within the population. 3. What is the main cause of a population bottleneck? a. Separation of the population b. A natural disaster c. A sudden increase in the population d. Increased inbreeding in a population Answer: b. Most population bottlenecks are caused by a natural disaster that kills off most of the population so that the gene pool of the surviving population is different from the gene pool of the original population.
161
