Evolution DEUA Practice

What is reproductive isolation?

• The process by which two populations become unable to interbreed

• The process of selecting mates based on physical traits

• The adaptation of organisms to their environment

• The formation of new species through mutation

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Which of the following is an example of temporal isolation?

• Two species of frogs that breed in different seasons

• Two species of birds that have different mating calls

• Two species of fish that live in different lakes

• Two species of insects that feed on different plants

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Describe how natural selection can lead to evolution.

• By increasing genetic variation within a population

• By favoring individuals with advantageous traits

• By causing random mutations in DNA

• By isolating populations geographically

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In a cladogram, what does a node represent?

• A common ancestor shared by the descendant lineages

• A species that is extinct

• A mutation in the genetic code

• A geographical barrier

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Which of the following is an example of the founder effect?

• A small group of birds colonizing a new island

• A large population of fish experiencing a sudden drop in numbers

• A species of plants adapting to a new climate

• A group of mammals migrating to a different continent

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Explain how the founder effect can lead to genetic drift.

• By increasing the genetic diversity of a population

• By reducing the genetic variation in a small population

• By causing mutations to occur more frequently

• By promoting interbreeding between different species

What is genetic drift?

• A change in allele frequencies due to random events

• A process of natural selection favoring certain traits

• A mechanism of gene flow between populations

• A type of mutation that affects genetic material

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How does genetic drift impact small populations differently than large populations?

• It has a more significant effect on allele frequencies in small populations

• It causes more mutations in large populations

• It leads to greater genetic diversity in small populations

• It results in more stable allele frequencies in large populations

Which type of reproductive isolation occurs when two species have different courtship behaviors?

• Temporal isolation

• Behavioral isolation

• Mechanical isolation

• Geographic isolation

What information can be inferred from the length of branches in a cladogram?

• The amount of evolutionary change

• The geographical distribution of species

• The reproductive success of species

• The physical size of organisms