Discovering Galápagos

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According to the Biological Species Concept, a species is defined as a group of populations that

have the potential to interbreed and produce viable offspring (correct)
occupy the same geographic area
are genetically identical
share similar physical characteristics

What is the main criteria used by biologists to group organisms when applying the Biological Species Concept?

Morphology
Ecological niche
Genetic similarity (correct)
Geographic distribution

Gene flow between populations of a species

prevents speciation
increases genetic diversity (correct)
results in the formation of new species
causes reproductive isolation

Which statement best describes the concept of reproductive isolation?

It prevents successful interbreeding between different species (B) Signup and view all the answers

Temporal isolation is a type of reproductive barrier that occurs when

organisms are active during different times of the day (C) Signup and view all the answers

Behavioral isolation is a type of reproductive barrier that occurs when

organisms have different mating behaviors (D) Signup and view all the answers

Mechanical isolation is a type of reproductive barrier that occurs when

organisms have incompatible genitalia (C) Signup and view all the answers

Which of the following is NOT a prezygotic reproductive barrier?

Geographic isolation (B) Signup and view all the answers

What is the main difference between prezygotic and postzygotic reproductive barriers?

Prezygotic barriers prevent the formation of a zygote, while postzygotic barriers prevent the survival or reproduction of hybrid offspring (C) Signup and view all the answers

Hybrid inviability and hybrid infertility are examples of

postzygotic barriers (C) Signup and view all the answers

Which scientist discovered plants and animals in the Galápagos Islands that were found nowhere else on Earth?

Charles Darwin (B) Signup and view all the answers

What is speciation?

The process by which one species splits into two or more species (B) Signup and view all the answers

What do species that result from speciation share?

Some characteristics inherited from their common ancestor (B) Signup and view all the answers

What is microevolution?

Changes in allele frequency in a population over time (C) Signup and view all the answers

What is macroevolution?

Broad patterns of evolutionary change above the species level (C) Signup and view all the answers

What does macroevolution include?

Both changes in allele frequency and the origin of new groups of organisms (A) Signup and view all the answers

What is the main focus of microevolution?

Changes in allele frequency in a population over time (A) Signup and view all the answers

What is the main focus of macroevolution?

The origin of new groups of organisms (C) Signup and view all the answers

What does speciation form a conceptual bridge between?

Microevolution and macroevolution (C) Signup and view all the answers

What is the "Mystery of Mysteries" mentioned in the text?

The conceptual bridge between microevolution and macroevolution (B) Signup and view all the answers