Multiple Choice
Which of the following factors are involved in the formation of a new species?
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23. Speciation
Introduction to Speciation
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Which of the following are prevented by prezygotic isolating mechanisms?
A
Survival of hybrid adults
B
Formation of hybrid zygotes
C
Reproductive success of hybrids
D
Development of hybrid offspring
Verified step by step guidance1
Understand the concept of prezygotic isolating mechanisms: These are biological features that prevent different species from mating and producing hybrid zygotes.
Identify the types of prezygotic isolating mechanisms: These include temporal isolation, habitat isolation, behavioral isolation, mechanical isolation, and gametic isolation.
Analyze the options given in the problem: The options are related to different stages of hybrid formation and development.
Determine which stage is directly affected by prezygotic mechanisms: Prezygotic mechanisms act before fertilization, thus preventing the formation of hybrid zygotes.
Conclude that prezygotic isolating mechanisms prevent the formation of hybrid zygotes, as they act before the zygote can be formed.
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