Natural selection is a fundamental mechanism driving the evolution of species. To research this conclusion a group of scientist
want to test the effects of increased river salinity on a population of catfish in a river. What results from this experiment would confirm that natural selection is a process that can drive evolution
The result which could confirm that natural selection is a process that can drive evolution is "change in the allele frequency of the population".
When salinity of the river is increased, the individuals which can tolerate the changing environment would survive.
Due to natural selection, these individuals would survive and reproduce more efficiently as compared to the individuals which lack such traits or adaptations.
Over generations, the population would only consist of these organisms and thus, the allele frequency of the population would change.
Natural selection<span> is the differential survival and reproduction of individuals due to differences in </span>phenotype<span>. It is a key mechanism of </span>evolution<span>, the change in </span>heritable traits<span> of a </span>population<span> over time. </span>Charles Darwin<span> popularised the term "natural selection", and compared it with </span>artificial selection<span>.</span>
As we can see from the chart, the diversity of animals in Africa are being affected year after year. In 10 year gap 53,000 lions, 42,500 cheetahs and 12,500 zebras are dead and this is a dangerous sign.
