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 males and females don’t like each other very much and so prefer not to mate.
B because there is over-population and species survival depends on a new species evolving.
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 not the only pattern of speciation observed in the natural world.
B one possible explanation of speciation accepted by biologists today.
C is called the theory of phyletic gradualism.
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 parallel evolution.
C microevolution.
D gradualism.
Question #4
A natural selection is a powerful process.
B environments change slowly.
C gene flow between individuals within the population keeps them similar to each other.
D new mutations are usually maladaptive.
Question #5
A genetic drift within populations.
B gene flow among members of the same species.
C they way natural selection favors particular traits suited to a specific ecological niche.
D sexual selection between two different species
Question #6
A parallel evolution.
B homology.
C generalization.
D adaptive radiation.
Question #7
A migration
B allopatric speciation.
C sympatric speciation.
D extinction
Question #8
A the relationship between humans and other animals in their ecological niche
B how the evolution of one species affects the evolution of another species
C small scale evolutionary changes within a single generation
D large scale evolutionary change such as speciation
Question #9
A the death of individuals in a group.
B the formation of new species.
C evolutionary change within a species.
D the extinction of a species.
Question #10
A the appearance of new species
B the change from one species to another in one generation
C the change in allele frequencies from one generation to the next
D any type of genetic mutation
Question #11
A All of these forces may disrupt equilibrium.
B genetic drift
C mutation
D gene flow
Question #12
A the differential reproductive success of individuals
B the chance loss of alleles in a population
C the exchange of genes between populations
D the production of new genetic material
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 medium-sized populations.
B populations out of equilibrium.
C small populations.
D large populations.
Question #15
A mutation
B migration
C genetic drift
D recombination
Question #16
A are affected by genes at many loci.
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 can be greatly impacted by the environment during an individual’s growth and development.
Question #17
A mutation
B genetic drift
C migration
D natural selection
Question #18
A Mutations can be hidden in the heterozygous genotype.
B New variation is slowly added by mutation.
C There is no blending during sexual reproduction.
D All of these are ways that genetic variation remains within a population.
Question #19
A the somatic cells of the body.
B do not differ between male and female animals.
C the sex cells or eggs and sperm.
D were discovered by Darwin.
Question #20
A gene
B mutation
C genetic drift
D allele
Question #21
A One chromosome from each homologous pair is passed on to gametic cells during meiosis.
B Hereditary material is contained in the chromosomes.
C Chromosomes come in pairs.
D These are all true about choromsomes
Question #22
A non-genetic trait
B polygenic trait
C dominant trait
D mendelian 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 the survivors of the drought had a larger average beak size
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 stabilizing selection
B averaging selection
C disruptive selection
D directional selection
Question #26
A cannot be passed from parent to offspring.
B almost always occur by chance alone.
C are components of organisms that enable them to survive and reproduce.
D allow organisms to evolve more rapidly.
Question #27
A evolutionary change would proceed in a nonadaptive direction.
B traits are not inherited by offspring.
C there are no differences in the traits to be favored and affect survival and reproducation.
D there is no competition.
Question #28
A the inheritance of variation.
B variation in fitness.
C the struggle for existance.
D Natural selection is based on all three of these answers.
Question #29
A while organisms within a population reproduce rapidly, resources are limited.
B individuals with useful adaptations will be more likely to survive and reproduce.
C all of these are essential elements of natural selection.
D individuals within a population vary.