Question

What factors could lead to the rise of a new species?

Answer 1

Species: A species is a group of organisms in which the mating of two opposite gender produce fertile offspring.

Speciation: Speciation is the formation of new species from pre-existing species.

The factors that could lead rise of a new species:

a. Natural selection

• Some organisms in the population have traits that help them in surviving in odd environmental conditions. Such organisms are considered as fit by the nature.
• Reproductively fit organisms can produce more progeny and hence they are selected by nature over other organisms of the same species.
• Natural selection causes alteration of the gene frequencies.

b. Genetic drift:

• Genetic drift is the alteration of gene frequencies that occurs because of chance events in a population.
• The genetic drift causes the accumulation of differences between the two groups of the population.

c. Geographical isolation:

• Geographical isolation is a process where a physical barrier forms a reproductive barrier between the members of the same species.
• The physical barrier can be a large water body or a huge mountain.
• As a result of geographical isolation, two different species are formed as they undergo different types of evolution.