Question:
According to Darwin, evolution is_______
According to Darwin, evolution is_______
Updated On: Apr 19, 2024
- a slow, gradual and continuous process
- a sudden but discontinuous process
- a slow and discontinuous process.
- a slow, sudden and discontinuous process
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The Correct Option is A
Solution and Explanation
Darwin believed that evolution is a slow, gradual and continuous process which occurs due to the variations that get accumulated and are heritable. Whereas, according to de Vries, evolution is a jerky and discontinous process, de Vries believed mutation or discontinous variation is the raw material of evolution. Unlike Darwin?s continuous variations, mutation appear all of a sudden and become operational immediately.
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Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.