Question

How do stabilizing and disruptive selection differ? see section 23.3 (page 463) . view available hint(s) how do stabilizing and disruptive selection differ? see section 23.3 (page 463) . with stabilizing selection, the phenotype for a trait does not influence survival. with disruptive selection, the phenotype for a trait affects survival. stabilizing selection reduces the amount of variation in a trait. disruptive selection increases the amount of variation in a trait. with stabilizing selection, extreme individuals have high biological fitness. with disruptive selection, extreme individuals have low biological fitness. stabilizing selection produces adaptation. disruptive selection is nonadaptive?

Answer 1

The correct answer is stabilizing selection reduces the amount of variation in a trait. disruptive selection increases the amount of variation in a trait.

Stabilizing selection is a type of natural selection in which genetic diversity decreases because natural selection favours an average phenotype and selects against extreme variations.

Disruptive selection is a type of natural selection in which extreme values for a trait are favoured over intermediate values, thus it increases genetic variance.

Answer 2

Answer:

Natural selection in evolution:

Living beings adapts to certain environmental factors all in different ways most of the time and many beings are alike in doing so. As some of the living beings can adapt to certain environmental factors while others can not follow the same pathway and may lead to the results of extinction. Different organisms are treated in more diverse form by the environment in which it lives.

But, the nature selection is carried in three main pathways or patterns, as they are as follows:

1. The stabilizing selection,
2. The directional selection,
3. The disruptive selection.

Explanation:

• Stabilizing form of selection:

In the stabilizing form or pathway for natural selection  the organisms selected for evolution possess less diversity among them, as most of them are selected are average individuals inside the population.

As the phenotype for a trait does not influence survival. with disruptive selection, the phenotype for a trait affects survival. Along, with that stabilizing selection reduces the amount of variation in a trait.

• Disruptive form of natural selection:

The disruptive form of natural selection comprises of variations inside the genetics of the species in order to adopt to certain environmental factors. As there is diversity among the genotype of the species inside the given population.Disruptive selection is more adaptive in nature.