Multiple Choice
What kind of isolation occurs when two populations of birds have different courtship dances?
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23. Speciation
Introduction to Speciation
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Which of the following is a characteristic of reproductive isolation in the process of speciation?
A
Development of hybrid offspring with reduced fitness
B
Increased gene flow between populations
C
Uniform environmental conditions across habitats
D
Enhanced interbreeding between different species
Verified step by step guidance1
Understand the concept of reproductive isolation: It is a mechanism that prevents different species from interbreeding and producing fertile offspring, which is crucial in the process of speciation.
Identify the role of hybrid offspring in reproductive isolation: Hybrid offspring often have reduced fitness, meaning they are less likely to survive and reproduce, which reinforces reproductive barriers between species.
Analyze the options given: Consider how each option relates to reproductive isolation. Increased gene flow and enhanced interbreeding would decrease isolation, while uniform environmental conditions do not directly relate to reproductive isolation.
Focus on the option about hybrid offspring: Recognize that the development of hybrid offspring with reduced fitness is a common outcome of reproductive isolation, as it prevents the successful merging of different species.
Conclude that the correct characteristic of reproductive isolation in the process of speciation is the development of hybrid offspring with reduced fitness, as it maintains the separation between species.
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