Biological evolution is the process of alteration of inherited traits. According to the theory, modern-day organisms descended from earlier, different species of organisms. Thus, option 4 is correct.
Evolution is said to be the modifications in the inherited characteristics in a population over the course of time. These traits are expressed in the offspring when passed from the reproductive methods.
The process of evolution is said to be due to variations and natural selection. At the genetic level when the genes mutate in the population and allow for adaptation results in evolution and survival.
Biological evolution is the reason that supports the resemblance of the modern-day organism to the species from earlier times and depicts the ancestry and the lineage.
Therefore, option 4. modern organisms descended from earlier species.
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