Are Humans Evolving? How would you know?. Lisa Torres, Joan Miyazaki, Jeff Leips, Bill Collins, Phil Sokolove, (The Changlings ). Learning Objectives. Be able to define evolution Understand factors that cause or lead to changes in allele frequency
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Lisa Torres, Joan Miyazaki, Jeff Leips, Bill Collins, Phil Sokolove,
Give a number for each of the following from 1 to 5:
1 –agree 5 – disagree
A. When one trait is dominant to another trait, it is generally also the most frequent trait in a population.
B. Traits evolve in response to environmental change.
C. Allele frequencies change in all of the individuals in a population in response to changes in the environment.
D. Evolution is change in allele frequencies in a population over time.
E. Evolution is change in heritable traits in a population over many generations.
F. Evolution takes millions and millions of years.
p2 + 2pq + q2 = 1 p + q = 1
to match its environmental background?
Photo: Hopi Hoekstra
Nachman, Hoekstra, D’Agostino 2003 PNAS
Photos: Hopi Hoekstra
Photos by Hopi Hoekstra
How might a gene lethal to children persist in a population?
If a small group of humans scatters and disperses widely on an uninhabited land mass-would you expect their diversity to increase, decrease, or remain the same?
What effects do antibiotics and pesticides have on the evolution of their target organisms?
What trends have already occurred in human evolution?
Preclass: Readiness assessment test, misconception survey
Formative: Student response to directed questions e.g., clickers, one minute paper, student reporting during class
Summative: Student assessment survey (SALG)
Repeat misconception survey