Reproductive Isolation Quiz

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Test your knowledge on isolation barriers

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Camille Jimenez

Philippines

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Reproductive Isolation Quiz


Reproductive Isolation QuizOnline version Test your knowledge on isolation barriers by Camille Jimenez 1 Which prezygotic barrier arises when two species breed in different habitats within the same area? a Behavioral isolation b Temporal isolation c Habitat isolation d Mechanical isolation e Feedback: Habitat differences keep species apart even in the same region. 2 A difference in mating times prevents interbreeding. What barrier is this? a Feedback: Timing reduces mating opportunities between species. b Temporal isolation c Mechanical isolation d Habitat isolation e Behavioral isolation 3 Courtship rituals that fail to attract a mate from another species illustrate which barrier? a Behavioral isolation b Temporal isolation c Habitat isolation d Gametic isolation e Feedback: Differences in signals prevent interspecific mating. 4 Incompatibility of genital structures between species represents which barrier? a Behavioral isolation b Feedback: Physical mismatches prevent mating even if individuals meet. c Gametic isolation d Mechanical isolation e Habitat isolation 5 When eggs and sperm from different species cannot unite, which barrier is at work? a Gametic isolation b Habitat isolation c Feedback: Molecular incompatibilities prevent fertilization. d Mechanical isolation e Temporal isolation 6 Hybrid offspring fail to develop properly due to genetic incompatibilities. Which postzygotic mechanism is this? a Hybrid inviability b Gametic isolation c Feedback: Embryos may die before or shortly after birth. d Hybrid sterility e Hybrid breakdown 7 A hybrid is healthy but unable to produce fertile offspring. Name this postzygotic barrier. a Hybrid breakdown b Gametic isolation c Hybrid sterility d Feedback: Sterile hybrids prevent gene flow. e Hybrid inviability 8 Hybrids are viable and fertile but their offspring are weak or sterile in successive generations. This describes which barrier? a Hybrid breakdown b Gametic isolation c Feedback: Fitness declines in later generations. d Hybrid sterility e Hybrid inviability 9 Darwin’s finches and their beak adaptations contribute to which isolation concept? a Feedback: Differences in behavior and ecology reduce interbreeding. b Temporal isolation c Mechanical isolation d Gametic isolation e Behavioral and ecological isolation 10 Species in a single area do not interbreed due to pollinator preferences in flowering plants. Which barrier is this? a Mechanical isolation b Feedback: Pollinator choice reduces cross-species mating. c Behavioral and ecological isolation d Habitat isolation e Temporal isolation Feedback 1 Correct or not 2 Correct or not 3 Correct or not 4 Correct or not 5 Correct or not 6 Correct or not 7 Correct or not 8 Correct or not 9 Correct or not 10 Correct or not

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Reproductive Isolation Quiz

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About this activity

Created by

Download the paper version to play

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Reproductive Isolation QuizOnline version

by Camille Jimenez

Which prezygotic barrier arises when two species breed in different habitats within the same area?

A difference in mating times prevents interbreeding. What barrier is this?

Courtship rituals that fail to attract a mate from another species illustrate which barrier?

Incompatibility of genital structures between species represents which barrier?

When eggs and sperm from different species cannot unite, which barrier is at work?

Hybrid offspring fail to develop properly due to genetic incompatibilities. Which postzygotic mechanism is this?

A hybrid is healthy but unable to produce fertile offspring. Name this postzygotic barrier.

Hybrids are viable and fertile but their offspring are weak or sterile in successive generations. This describes which barrier?

Darwin’s finches and their beak adaptations contribute to which isolation concept?

Species in a single area do not interbreed due to pollinator preferences in flowering plants. Which barrier is this?

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