Featured Research

from universities, journals, and other organizations

The Evolution Of Phenotypic Polymorphism

Date:
April 17, 2005
Source:
University Of Chicago Press Journals
Summary:
This new study, which will appear in the June 2005 issue of The American Naturalist, asserts that an individual could use his/her genotype as an informative cue when "deciding" which phenotype to develop. This is a new way of looking at certain kinds of genetic polymorphism.

This new study, which will appear in the June 2005 issue of The American Naturalist, asserts that an individual could use his/her genotype as an informative cue when "deciding" which phenotype to develop. This is a new way of looking at certain kinds of genetic polymorphism.

Related Articles


Some species have alternative phenotypes, which are different categories of adult individuals specialized for particular circumstances. For instance, if predation risk is high in some local environments and low in others, one category might have a predation resistant phenotype, with protective devices like spines, whereas the other category lacks these devices and is instead more efficient at producing offspring.

If a developing individual can, statistically, predict the predation risk, it would be advantageous to develop the phenotype that fits the prediction. With spatial variation in predation risk, genetic determination of phenotypic alternatives can function as this kind of advantageous prediction, since natural selection will make genes for the protected type more common in local environments with high predation risk and less common in those with low risk.

Conceptually, this is the same as using some purely environmental cue signaling the presence of predators to infer the risk of predation. The evolutionary theory developed in this study suggests when genetic variation can function as an informative cue in this manner.

###

Sponsored by the American Society of Naturalists, The American Naturalist is a leading journal in the fields of ecology and evolutionary biology and animal behavior. For more information, please see our website: http://www.journals.uchicago.edu/AN.

Olof Leimar (Stockholm University), "The evolution of phenotypic polymorphism: randomized strategies versus evolutionary branching" 165:6 June 2005.


Story Source:

The above story is based on materials provided by University Of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University Of Chicago Press Journals. "The Evolution Of Phenotypic Polymorphism." ScienceDaily. ScienceDaily, 17 April 2005. <www.sciencedaily.com/releases/2005/04/050416183740.htm>.
University Of Chicago Press Journals. (2005, April 17). The Evolution Of Phenotypic Polymorphism. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2005/04/050416183740.htm
University Of Chicago Press Journals. "The Evolution Of Phenotypic Polymorphism." ScienceDaily. www.sciencedaily.com/releases/2005/04/050416183740.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Cambodian Capital's Only Working Elephant to Retire in Jungle

Cambodian Capital's Only Working Elephant to Retire in Jungle

AFP (Nov. 25, 2014) Phnom Penh's only working elephant was blessed by a crowd of chanting Buddhist monks Tuesday as she prepared for a life of comfortable jungle retirement after three decades of giving rides to tourists. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins