Question

Role of isolation in evolution is
A. Differentiation of species
B. Maintenance of species
C. Evolution divergence
D. Extermination of species

Answer 1

Hint: Speciation, known as Allopatric speciation, happens when one organism is culturally isolated from the rest of the population and then evolves through natural selection and genetic drift.

Complete answer:
First we should know about evolution to answer this question. Evolution is a shift in biological populations' heritable traits over subsequent generations. The expressions of genes are passed down during childbirth from parents to children are these features.
Now, let us find the solution from the options-
- Species distinction is a wrong choice because humans do not show species distinction. Isolation is not synonymous with species maintenance or extermination. Thus, option A is not the correct option.
- Ecologists have found that variations in how animals interact with their ecosystem offset the unavoidable habitat depletion that happens as their weaker counterparts are overrun by stronger rivals. Thus, option B is not the correct option.
- The aggregation of distinctions between closely related organisms within a genus is divergent evolution, leading to speciation. When two populations are separated by a spatial boundary and undergo distinct selection pressures that cause adaptations to their new surroundings, divergent evolution is usually observed.
- And since the number of extinctions of species in the history of earth is almost the same as the numbers of originations, Darwin added specific importance to extinction; today's biodiversity is the product of a marginal surplus of originations, accrued over millions of years. Thus, option D is not the correct option.

Thus, the correct answer is option (C) Evolution divergence

Note: Allopatric speciation is the most popular speciation process which accounts for nearly all of the evolution of new species of animals. Allopatric speciation, sometimes known to as geographic or vicariant speciation, or its older name, the model dumbbell