XX is a type of selection process in evolutio | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The correct answer is Directional selection.Natural selection processes are categorized as follows:$(i)$ Stabilizing Selection (Balancing selectio

Vedclass · Accepted Answer

Directional selection

Vedclass · Answer

(B) The correct answer is Directional selection.Natural selection processes are categorized as follows:$(i)$ Stabilizing Selection (Balancing selection): This type of selection favours average-sized individuals while eliminating small and large-sized individuals. It reduces variation and,therefore,does not promote evolutionary changes. It maintains the mean value from generation to generation. The graphical curve of the population is bell-shaped.$(ii)$ Directional Selection (Progressive Selection): In this selection,the population changes towards one particular direction. This type of selection favours either small or large-sized individuals,and more individuals of that type will be present in the new generation. Consequently,the mean size of the population changes.$(iii)$ Disruptive Selection (Diversifying selection): This type of selection favours both small-sized and large-sized individuals. It eliminates most of the members with mean expression,producing two peaks in the distribution of the trait,which may lead to the development of two different populations. This kind of selection is the opposite of stabilizing selection and is rare in nature but is very important in bringing about evolutionary changes.

$XX$ is a type of selection process in evolution. $XX$ promotes population changes in one particular direction. $XX$ favours small or large-sized individuals,and the mean size of the population changes in $XX$. Identify $XX$.

Similar Questions

The modern theory of organic evolution,also known as the Synthetic Theory of Evolution,is based on which of the following factors?

What is artificial selection? Do you think it affects the process of natural selection? How?

What is the phenomenon called when variation in gene frequency in a population occurs by chance rather than by natural selection?

According to Darwin,organic evolution is due to:

According to Darwin's theory of evolution,differences between species occur due to:

Vedclass Test Series

Exam Paper Generator

Online Exam Module