Podcast
Questions and Answers
What type of isolation occurs when two species have different mating rituals?
What type of isolation occurs when two species have different mating rituals?
- Ecological Isolation
- Temporal Isolation
- Behavioral Isolation (correct)
- Mechanical Isolation
Which mechanism prevents fertilization due to structural differences in reproductive organs?
Which mechanism prevents fertilization due to structural differences in reproductive organs?
- Zygotic Mortality
- Hybrid Inviability
- Gametic Isolation
- Mechanical Isolation (correct)
What results from the mating between a horse and a donkey?
What results from the mating between a horse and a donkey?
- Zygotic Mortality
- Hybrid Infertility (correct)
- Hybrid Inviability
- Behavioral Isolation
Which type of isolation prevents species from meeting due to their different habitats?
Which type of isolation prevents species from meeting due to their different habitats?
What is the primary cause of gametic isolation?
What is the primary cause of gametic isolation?
Flashcards
Ecological Isolation
Ecological Isolation
Species that live in different environments and rarely encounter each other.
Temporal Isolation
Temporal Isolation
Species that reproduce at different times, preventing interbreeding.
Behavioral Isolation
Behavioral Isolation
Species with distinct mating rituals that prevent recognition between mates.
Mechanical Isolation
Mechanical Isolation
Signup and view all the flashcards
Hybrid Infertility
Hybrid Infertility
Signup and view all the flashcards
Study Notes
Prezygotic Isolation Mechanisms
-
Ecological Isolation: Different habitats prevent interaction between species. Lions and tigers are an example, occupying distinctly different regions.
-
Temporal Isolation: Different breeding times in otherwise compatible species prevent mating. Day-blooming and night-blooming cacti illustrate this.
-
Behavioral Isolation: Unique courtship rituals signal species-specificity. Male jumping spiders' intricate dances are crucial for attracting the correct females.
-
Mechanical Isolation: Incompatible reproductive structures prevent mating. The intricate genital shape of some arthropods is an example.
-
Gametic Isolation: Incompatible gametes prevent fertilization. In coral reefs, different molecular markers on eggs and sperm only allow fertilization among the same species.
Postzygotic Isolation Mechanisms
-
Hybrids: Offspring of interspecies mating.
-
Zygotic Mortality: Fertilized zygotes fail to develop to maturity.
-
Hybrid Inviability: Hybrid offspring have low survival rates.
-
Hybrid Infertility: Hybrids, though surviving, are sterile (cannot reproduce). Mules are an example of a sterile hybrid (horse and donkey).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
