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human evolution midterm 3
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Questions in this quiz (30)
1Intrasexual selection in primates leads to [blank_start]sexual dimorphism[blank_end], differences between adult males and females in terms of body size or morphology.
- Asexual dimorphism
2[blank_start]Altruistic behaviors[blank_end]: behaviors that benefit others at a cost to the actor.
- AAltruistic behaviors, altruism
3What are altruistic behaviors?
- AWarning calls
- BGrooming
- CTaking care of infants other than your own
43 main mechanisms for the evolution of cooperation
1. [blank_start]Kin selection[blank_end]
2. [blank_start]Mutualism[blank_end]
3. [blank_start]Reciprocal altruism[blank_end]- AKin selection
- BMutualism
- CReciprocal altruism
5Mutualism
- AAny behavior that benefits yourself or your children and improves your reproductive success.
- BBehaviors provide benefits to both actors and recipients.
- CWhen altruistic acts are returned.
6Kin selection
- ABehaviors that provide benefits to both actors and recipients.
- BWhen altruistic acts are returned.
- CAny behavior that benefits yourself or your children and increases reproductive success.
7Reciprocal altruism
- AWhen altruistic acts are returned.
- BBehaviors provide benefits to both actors and recipients.
- CAny behavior that benefits yourself or your children and increases reproductive success.
8Change in allele frequencies from one generation to the next.
- ANatural selection
- BAnagenesis
- CCladogenesis
- DEvolution
9Process whereby heritable features that enhance fitness increase in frequency in the population.
- ANatural selection
- BEvolution
- CAnagenesis
- DCladogenesis
10Ability to survive and reproduce; reproductive success.
- AEvolution
- BNatural selection
- CFitness
- DStasis
11[blank_start]Anagenesis[blank_end]: Gradual change in one lineage over time, no branching speciation event.
- AAnagenesis
12[blank_start]Cladogenesis[blank_end]: Division of a single lineage into two lineages, a branching event.
- ACladogenesis
13[blank_start]Stasis[blank_end]: No change in a lineage over time, population is in equilibrium or stabilizing selection.
- AStasis
14[blank_start]Phyletic gradualism[blank_end]: Gradual change in the morphology of a population of organisms through time, anagenetic, cladogenetic, or both.
- APhyletic gradualism
15[blank_start]Punctuated equilibrium[blank_end]: The morphology of most species is in equilibrium for long periods of time, punctuated by rapid morphological and genetic shifts that result in the formation of new species.
- APunctuated equilibrium
16Chromosome
- ASection of DNA coding for specific trait.
- BDNA molecules on the nucleus arranged into structures.
- CAlternative version of a gene.
17Gene
- ASection of DNA coding for specific trait.
- BAlternative version of a gene.
- CDNA molecules on the nucleus arranged into structures.
18An allele is an alternative version of a gene.
- ATrue
- BFalse
19A dominant allele is expressed when only one copy is present, a recessive allele is expressed when two copies are present.
- ATrue
- BFalse
20Genotype is the genetic makeup of an individual.
- ATrue
- BFalse
21Phenotype is the physical expression of the genotype.
- ATrue
- BFalse
22[blank_start]Homozygous[blank_end]: same allele at a certain locus for a gene on both chromosomes
- AHomozygous
23A [blank_start]directional selection[blank_end] is a force in nature that causes a population to evolve towards one end of a trait spectrum. e.g.
- Adirectional selection
24[blank_start]Stabilizing selection[blank_end] is any selective force or forces which push a population toward the average, or median trait.
- AStabilizing selection
25[blank_start]GENETIC DRIFT[blank_end]: change in genetic composition from generation to generation due to chance sampling events.
- AGENETIC DRIFT
26Phylogeny
- AGroups of species that share a common ancestor.
- BEvolutionary branching pattern of species.
- CDiagram used to denote relationships.
27Clade
- AGroups of species that share a common ancestor.
- BEvolutionary branching patterns of species.
- CDiagram used to denote relationships.
28[blank_start]Cladogram[blank_end]: diagram used to denote phylogenetic relationships.
- ACladogram
29A [blank_start]synapomorphy[blank_end] is a shared, derived character, common between an ancestor and its descendants.
- Asynapomorphy
30[blank_start]symplesiomorphy[blank_end]: An ancestral character state shared by two or more lineages in a particular clade.
- Asymplesiomorphy
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- Description
- Quiz on human evolution midterm 3, created by Jennesy Herrera on 15/10/2022.
- Author
- Jennesy Herrera
- Language
- English
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