Question

What is reproductive isolation required for speciation to occur

Answer 1

Reproductive isolation is necessary for speciation to occur, as it prevents gene flow and allows populations to evolve independently and form distinct species.

Step-by-step explanation:

Speciation occurs through two main pathways: geographic separation (allopatric speciation) and through mechanisms that occur within a shared habitat (sympatric speciation). In both cases, populations become reproductively isolated. Reproductive isolation is necessary for speciation to occur because it prevents gene flow between different populations, allowing them to evolve independently and eventually form distinct species. Prezygotic barriers can block reproduction prior to the formation of a zygote, while postzygotic barriers can block reproduction after fertilization has occurred.

Answer 2

Speciation occurs when a single species becomes two or more separate species, which can no longer interbreed with one another. Reproductive isolation is required for speciation. Reproductive isolation means the groups in question cannot mate with one another, often because of physical barriers.