This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ing genetic change is hard Ecological changes
Why didn't Pikas evolve greater tolerance for
the rising temperatures? • Easy solution: focus on genetic polymorphisms
or Mendelian traits
– Phenotype Genotype
• Melanic dominant to orange • Dark gives a
Quantitative trait challenge:thermal advantage
under: How often are species going to be able to
evolve and adapt to the continuously
changing climate? Cold temperatures
High radiation we can't infer genotype from phenotype.
http://www.opalexplorenature.org/TwospotLadybird (unlike Mendelian traits) 10 4/3/2013 Figures modified from Brakefield and de Jong (2011), Heredity 107: 574 578 Color coded: the darker the blue, the colder it
was that year. Season
Winter Spring Summer Autumn Total what we see is a year-round increases in
temperature (throughout all 4 seasons). Time Colder than average,
melanic favored Warmer than average,
red favored Prediction: As we move in time, the redfavoring genotype should be favored. Figures modified from Brakefield and de Jong (2011), Heredity 107: 574 578 • 1980: Colder...
View Full Document
This document was uploaded on 01/27/2014.
- Winter '14
- Annotated Lecture S