Question

What is reproductive isolation? Describe any two types each of pre-mating and post-mating isolating mechanisms.

Hint:

Reproductive isolation is essential for the emergence of new species, a process known as speciation.

Answer 1

Types of Reproductive Isolation: 
Reproductive isolation serves as a critical mechanism that restricts gene flow between distinct species, facilitating speciation. 
1. Pre-mating Isolation (Prezygotic Barriers) 
Temporal Isolation: Species breed during different periods. 
Mechanical Isolation: Physical differences hinder successful mating. 
2. Post-mating Isolation (Postzygotic Barriers) 
Hybrid Inviability: Hybrids fail to develop correctly. 
Hybrid Sterility: Hybrids are incapable of reproducing (e.g., mules).