What is the difference between microevolution and macroevolution?         Macroevolution occurs on a smaller scale with only one species. Microevolution occurs on a larger scale and includes several different species changing at once.         Microevolution occurs when there is a change within a population of a given species. Macroevolution occurs when one species changes into a completely new species.          Macroevolution occurs when there is a change within a population of a given species. Microevolution occurs when one species changes into a completely new species.         Microevolution occurs on a smaller scale with only one species. Macroevolution occurs on a larger scale and includes several different species changing at once.

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Q: extinction

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Q: true or false, Sexual selection may lead to sympatric speciation

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A: Disruptive selection result in sympatric speciation :-

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Q: The primary mechanism of sympatric speciation is a)dispersal and colonization of new environments

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Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.