What is the definition of selective pressure?

Answer 1

Selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection, and it can be divided into two types of pressure: biotic or abiotic

Answer 2

According to Darwin's theory a selection pressure are outside forces in the environment that eventually make certain phenotypic traits appear. An example of this is a brown mouse in a field.

Molten lava spills from a crack in the earth and creates a black surface. The mouses color does not allow for it to be naturally competitive and it becomes prey more often. Darker mice do better than lighter colored one. Sooner or later as generations pass, a mutation occurs in the mouses gene and causes some mice to appear black. The black mouse blends in with the surface and it becomes the ultimate species within the population. Generation after generation, the mouse reproduces more black mice and less brown mice. Black mice are more competitive than the browns ones so the brown ones die out and the black become the dominant species. That is an example of a selection pressure.

Answer 3

Selection pressure is a factor such as temperature and predation that affects organisms and result in selective reproduction of phenotypes. When selection pressure is negative, it eliminates any successful reproduction of individuals having a certain characteristic.

Answer 4

Selective pressure refers to the environmental factors that influence the survival and reproduction of individuals with certain traits, leading to changes in a population's gene frequencies. These pressures can include competition for resources, predation, climate, or other factors that affect an organism's ability to thrive in its environment.

Answer 5

Selection pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection.

Answer 6

The phrase selective pressure means any reason for organisms to have a survival benefit. These certain phenotypes may also have its disadvantages.

Answer 7

selection pressure noun Biology
An agent of differential mortality or fertility that tends to make a population change genetically.

Answer 8

selective pressure means: any cause that reduces reproductive success in a proportion of a population, potentially exerts evolutionary pressure or selection...

Answer 9

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