Evolutionary changes within populations of a species is called
Evolutionary changes within populations of a species are called microevolution
Evolutionary changes within populations of a species are called microevolution. Microevolution refers to the small-scale changes in allele frequencies within a population over time. These changes can occur as a result of various mechanisms such as genetic mutations, gene flow (migration of individuals between populations), genetic drift (random fluctuations in allele frequencies), natural selection, and non-random mating.
Microevolutionary processes can lead to the gradual accumulation of genetic variations within a population, enabling it to adapt and evolve in response to environmental pressures. For example, if a population of birds inhabiting a particular area experiences a change in their environment, such as a shift in available food sources, individuals with certain genetic traits that confer an advantage in utilizing the new food source may have higher survival and reproductive success. Over time, the frequency of these advantageous traits within the population may increase, resulting in adaptive evolution.
It is important to note that microevolutionary changes within populations can eventually accumulate to such an extent that they may lead to the emergence of new species (macroevolution). However, microevolutionary changes primarily focus on the genetic variations and adaptations occurring within a single species, rather than the larger-scale divergence between species.
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