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