Introduction to Anthropology
Tuesday, November 29th, 2005 01:43 am![[identity profile]](https://www.dreamwidth.org/img/silk/identity/openid.png)
Daniel is looking tanned, and he smiles easily at his class as they file in.
"Good morning. Thank you for those of you who handed in your projects... I'll be handing out grades next week I expect. Those who didn't... Samuel Anders, Chihaya, Harry Potter and Willow Rosenberg all have detention on Saturday. If I don't get your projects in by Wednesday, then you'll be in detention again next Saturday, which I'm sure you really won't want.
Now, I hope that you all had a good Thanksgiving? All of you who celebrate it, that is.
Today, we're looking at population genetics. This the study of the distribution of and change in allele frequencies under the influence of the five evolutionary forces: natural selection, genetic drift, mutation, migration and nonrandom mating. It also takes account of population subdivision and population structure in space. As such, it attempts to explain such phenomena as adaptation and speciation. Population genetics was a vital ingredient in the modern evolutionary synthesis, its primary founders were Sewall Wright, J. B. S. Haldane and Ronald Fisher, who also laid the foundations for the related discipline of quantitative genetics.
We're going to take several lessons with this, so I can make sure you all know what we're talking about. I trust you all know what an allele is? Raise your hand if you're not exactly sure - please, don't be embarrassed.
First... the five evolutionary forces. Natural selection is the process by which variants displaying favorable or deleterious traits end up producing more or fewer progeny relative to other individuals of the same population.
Who can tell me more about it?"
"Good morning. Thank you for those of you who handed in your projects... I'll be handing out grades next week I expect. Those who didn't... Samuel Anders, Chihaya, Harry Potter and Willow Rosenberg all have detention on Saturday. If I don't get your projects in by Wednesday, then you'll be in detention again next Saturday, which I'm sure you really won't want.
Now, I hope that you all had a good Thanksgiving? All of you who celebrate it, that is.
Today, we're looking at population genetics. This the study of the distribution of and change in allele frequencies under the influence of the five evolutionary forces: natural selection, genetic drift, mutation, migration and nonrandom mating. It also takes account of population subdivision and population structure in space. As such, it attempts to explain such phenomena as adaptation and speciation. Population genetics was a vital ingredient in the modern evolutionary synthesis, its primary founders were Sewall Wright, J. B. S. Haldane and Ronald Fisher, who also laid the foundations for the related discipline of quantitative genetics.
We're going to take several lessons with this, so I can make sure you all know what we're talking about. I trust you all know what an allele is? Raise your hand if you're not exactly sure - please, don't be embarrassed.
First... the five evolutionary forces. Natural selection is the process by which variants displaying favorable or deleterious traits end up producing more or fewer progeny relative to other individuals of the same population.
Who can tell me more about it?"