Question

5. Using the following evolutionary concepts (speciation, macroevolution, microevolution, gene flow,genetic drift, and natural selection), represent your idea of how these evolutionary concepts are related to another. Use lines to connect and show the relationship between concepts. Write a word or short phrase by each line to specify the relationship between cocnepts.

Answer 1

Speciation is a process where the population due to accumulation of mutations over the time tends to become a distinct or completely separate species. It is the formation or evolution of a complete newly set of species.

The macroevolution is an evolution which takes place on a large scale and is able to evolve above the level of species. The accumulation of all the small changes that leads to speciation further evolves more and leads to macroevolution.

Gene flow is a process where there is transfer of the genetic variation from one population to another and hence it leads to genetic diversity. In this the genes are exchanged between two species and hence might lead to even diversity in population.

Genetic drift is a change in the small population due to random sampling or disappearance of the genes as it leads to the individuals die or is able to reproduce. It might led to elimination of complete species.

Natural selection is the process by which only the fittest is able to survive and carry forward its genotype due to selection by the nature and its ability to adapt. Better speciation and macroevolution with superior genotype might lead to natural selection.