There are three basic concepts that are often helpful in clarifying how descent with modification works. These concepts are:
genes mutate
individuals are selected
populations evolve
Thus there are different levels at which changes are taking place, the gene level, the individual level, and the population level. It is important to understand that genes and individuals do not evolve, only populations evolve. But genes mutate and those mutations often have consequences for individuals. Individuals with different genes are selected, for or against, and as a result, populations change over time, they evolve.
Also Known As: biological evolution
There are three basic concepts that are often helpful in clarifying how descent with modification works. These concepts are:genes mutateindividuals are selectedpopulations evolveThus there are different levels at which changes are taking place, the gene level, the individual level, and the population level. It is important to understand that genes and individuals do not evolve, only populations evolve. But genes mutate and those mutations often have consequences for individuals. Individuals with different genes are selected, for or against, and as a result, populations change over time, they evolve.Also Known As: biological evolution
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