Final answer:
The four postulates of natural selection are variation of traits, competition for resources, overproduction of offspring, and differential survival and reproduction, leading to adaptation over time.
Step-by-step explanation:
The four postulates of natural selection, as proposed by Charles Darwin, are:
-
- Variation of traits among individuals in a population
-
- Competition for limited resources
-
- Overproduction of offspring
-
- Differential survival and reproduction
These postulates can be summarized as follows:
-
- Individuals in a population vary in their traits.
-
- Organisms compete for limited resources.
-
- Organisms produce more offspring than can survive.
-
- Individuals with traits well-suited to their environment tend to survive and reproduce, passing on those traits to the next generation.
This process leads to the adaptation of populations to their environments over time, a concept Darwin described as 'descent with modification.' Natural selection is a crucial mechanism of evolution and is based on heritable variations that affect survival and reproductive success.
.