What is Disruptive Selection?

Disruptive selection occurs when individuals with more extreme characteristics, whether in terms of appearance (phenotypes) or genetic makeup (genotypes), have a fitness advantage compared to individuals with intermediate traits.

• Among the three types of natural selection, disruptive selection is the least common and can result in the deviation of a species line.
• This type of selection occurs during periods of change, such as changes in habitat or resource availability. 
• Individuals with traits at the extremes of the spectrum enjoy better chances of survival and reproduction, leading to a population with few individuals in the middle. 
• Individuals with intermediate characteristics face a fitness disadvantage, hindering their ability to pass on genes. They are not as successful at survival or breeding.
• In simpler terms, nature favors the extremes rather than the middle ground, leading to a population where individuals with highly distinct traits have better chances of survival and reproduction.
• Disruptive selection explains the diversity and adaptation of life on Earth by favoring heritable traits that enhance the survival and reproductive success of organisms, making them more prevalent in successive generations.