Navigation » List of Schools » Los Angeles Valley College » Anthropology » Anthropology 101 – Human Biological Evolution » Spring 2021 » Unit 2 Exam
Below are the questions for the exam with the choices of answers:
Question #1
A because there is over-population and species survival depends on a new species evolving.
B males and females don’t like each other very much and so prefer not to mate.
C when there is extensive gene flow within a single species.
D when interbreeding between two different species results in less successful hybrid offspring.
Question #2
A is called the theory of phyletic gradualism.
B one possible explanation of speciation accepted by biologists today.
C one possible explanation of speciation accepted by biologists today, is not the only pattern of speciation observed in the natural world and is called the theory of phyletic gradualism.
D is not the only pattern of speciation observed in the natural world.
Question #3
A punctuated equilibrium.
B parallel evolution.
C microevolution.
D gradualism.
Question #4
A environments change slowly.
B gene flow between individuals within the population keeps them similar to each other.
C natural selection is a powerful process.
D new mutations are usually maladaptive.
Question #5
A genetic drift within populations.
B sexual selection between two different species
C they way natural selection favors particular traits suited to a specific ecological niche.
D gene flow among members of the same species.
Question #6
A parallel evolution.
B homology.
C generalization.
D adaptive radiation.
Question #7
A sympatric speciation.
B allopatric speciation.
C extinction
D migration
Question #8
A large scale evolutionary change such as speciation
B how the evolution of one species affects the evolution of another species
C the relationship between humans and other animals in their ecological niche
D small scale evolutionary changes within a single generation
Question #9
A the extinction of a species.
B the death of individuals in a group.
C evolutionary change within a species.
D the formation of new species.
Question #10
A the appearance of new species
B the change in allele frequencies from one generation to the next
C the change from one species to another in one generation
D any type of genetic mutation
Question #11
A gene flow
B mutation
C All of these forces may disrupt equilibrium.
D genetic drift
Question #12
A the exchange of genes between populations
B the chance loss of alleles in a population
C the production of new genetic material
D the differential reproductive success of individuals
Question #13
A changes in gene frequencies that are random with respect to adaptation.
B maladaptive changes in gene frequencies.
C adaptive changes in gene frequencies.
D equilibrium in genetic frequencies.
Question #14
A populations out of equilibrium.
B small populations.
C medium-sized populations.
D large populations.
Question #15
A mutation
B genetic drift
C migration
D recombination
Question #16
A are affected by genes at many loci.
B can be greatly impacted by the environment during an individual’s growth and development.
C all of these are important in shaping continuously varying traits
D are shaped by many genes, each with only a small effect on the phenotype.
Question #17
A natural selection
B mutation
C migration
D genetic drift
Question #18
A New variation is slowly added by mutation.
B There is no blending during sexual reproduction.
C Mutations can be hidden in the heterozygous genotype.
D All of these are ways that genetic variation remains within a population.
Question #19
A were discovered by Darwin.
B the somatic cells of the body.
C the sex cells or eggs and sperm.
D do not differ between male and female animals.
Question #20
A gene
B allele
C genetic drift
D mutation
Question #21
A Chromosomes come in pairs.
B Hereditary material is contained in the chromosomes.
C These are all true about choromsomes
D One chromosome from each homologous pair is passed on to gametic cells during meiosis.
Question #22
A mendelian trait
B non-genetic trait
C dominant trait
D polygenic trait
Question #23
A The Grants found all these things as part of their study.
B beak size is inherited so the next generation had a larger average beak size
C a large number of the birds had died as a result of the drought
D the survivors of the drought had a larger average beak size
Question #24
A never changed because of high juvenile mortality
B changed because equilibrium existed in the population
C never changed because of stasis
D changed over time because of environmental change
Question #25
A stabilizing selection
B averaging selection
C directional selection
D disruptive selection
Question #26
A cannot be passed from parent to offspring.
B allow organisms to evolve more rapidly.
C are components of organisms that enable them to survive and reproduce.
D almost always occur by chance alone.
Question #27
A there are no differences in the traits to be favored and affect survival and reproducation.
B there is no competition.
C evolutionary change would proceed in a nonadaptive direction.
D traits are not inherited by offspring.
Question #28
A the inheritance of variation.
B Natural selection is based on all three of these answers.
C the struggle for existance.
D variation in fitness.
Question #29
A individuals within a population vary.
B all of these are essential elements of natural selection.
C individuals with useful adaptations will be more likely to survive and reproduce.
D while organisms within a population reproduce rapidly, resources are limited.