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  1. Variation: There must be genetic variation for a particular trait within a population.
  2. Inheritance: The trait must be heritable and passed down from one generation to the next.
  3. Differential reproductive success: Individuals with a certain trait must have higher reproductive success than those without it.
  4. Selection pressure: Environmental factors must exert pressure favoring individuals with the advantageous trait, leading to its increased frequency in the population over time.
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What is the theory of natual selection?

Short and memorably answer. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms. Natural selection is the main driver of adaptive change leading to evolution.


What is the difference between purifying selection and positive selection in the process of natural selection?

Purifying selection removes harmful genetic variations, while positive selection promotes beneficial genetic variations in natural selection.


Is natural selection the only force that drives biological evolution?

No. Natural selection requires reproductive variation to work on. Besides reproductive variation and natural selection, there are various forces, biochemical as well as population dynamical, that affect the allelic composition of a population.


All of these terms EXCEPT contribute to natural selection?

Genetic drift, as it is a random process that does not necessarily contribute to the differential survival and reproduction of individuals. Variation, heritability, and differential reproductive success are essential components of natural selection.


How do natural selection and sexual selection differ in their roles in shaping the evolution of species?

Natural selection and sexual selection are both mechanisms of evolution, but they differ in how they shape species. Natural selection acts on traits that affect an organism's survival and ability to reproduce in its environment, leading to adaptations that increase survival and reproduction. Sexual selection, on the other hand, acts on traits that affect an organism's ability to attract mates and reproduce, leading to the development of traits that enhance mating success. In summary, natural selection primarily influences survival and reproductive success in the environment, while sexual selection primarily influences mating success and reproductive opportunities.

Related Questions

What is unequal reproductive success of offspring?

Natural selection.


What is natural selection and how does natural selection evolution?

A simplified explanation. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms who by this reproductive success change the allele frequency over time in populations of organisms, which is evolution.


What is natural selection most closely related to?

Natural selection is most closely related to Darwin's theory of evolution.


What is the force driving natural selection?

Reproductive success. You are not evolving, but your progeny will; if you have any.


What is Darwinian?

Darwinian evolution is descent with modification and natural selection, or, in other terms, reproductive variation and differential reproductive success.


What is the third step in natural selection?

There are really no steps in natural selection - just conditions required for it to occur.


What process in which organisims with traits well suited to an environment are more likely to survive and to produce offspring is?

This process is called natural selection. It is the mechanism by which traits that provide a survival or reproductive advantage to an organism become more common in a population over time.


What happens to unnecessary traits during the process of natural selection?

How does natural selection affect undesirable traits?


What is the theory of natual selection?

Short and memorably answer. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms. Natural selection is the main driver of adaptive change leading to evolution.


Which phrase defines evolution by natural selection?

Differential reproductive success of variant replicators.


What is the difference between the processes of natural selection and artificial selection?

the difference between the 2 r that natural is the best looking or tasting and artificial is fake


What is Darwinian evolution?

Darwinian evolution is descent with modification and natural selection, or, in other terms, reproductive variation and differential reproductive success.