join the ap-bio course

๐ŸŽ–๏ธfiveable certificate upon completion

โฑ๏ธ 1 min read

๐Ÿ“ย ย 

ap bio

ย โ€ขย 

study guide

ย โ€ขย 

Unit 7

7.12 Variations in Population

#geneticdiversity

#extinction

#populations


written by

Samantha Himegarner

samantha himegarner

published on april 6, 2020

Last updated on May 31, 2020

Genetic Diversity

Genetic diversity in populations is very important. It helps increase their chances to be able to respond to changes in the environment. Populations with little genetic diversity are those that are at the highest risk of decline and extinction. The reason that genetically diverse populations are more resilient to environmental impacts is because it is more likely that they may have individuals who can withstand and survive it and pass those traits to their offspring.

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2F-e8YYMqbvK02q.webp?alt=media&token=ff88328a-9e7f-4072-b4d2-2f04250049ef

Image courtesy of Giphy.

Survival of a Population

Fiveable

join more students

create an account on fiveable

Having a variety of different traits within a population is advantageous for its survival because selective pressures could change (usually linked with the state of the ecosystem/environment). A condition that was previously deemed โ€œadvantageousโ€ could be harmful under new environmental conditions. The allele would then, theoretically, be selected against, and the numbers of individuals carrying that gene would begin to decrease.

Watch AP Bio live streams here.

Fiveable Logo

2550 north lake drive
suite 2
milwaukee, wi 53211

92% of Fiveable students earned a 3 or higher on their 2020 AP Exams.

*apยฎ and advanced placementยฎ are registered trademarks of the college board, which was not involved in the production of, and does not endorse, this product.

ยฉ fiveable 2020 | all rights reserved.