Tuesday, December 14, 2010
Fitness - Reproductive or Religious?
Saturday, November 27, 2010
Defining Evolution
I think that one of the biggest problems is a desire (by both the academics and the lay) for a sound byte definition of evolution. Survival of the fittest is a commonly used phrase, but it puts an improper focus on survival, lifespan, and appealing traits (i'm thinking something like, for humans, athleticism and muscular build) since fitness in our vernacular is different than the specific definition assigned to the word by biologists. In biology, fitness roughly means the success of an organism at passing on its genes. Further, the word survival applies to the forthcoming generation, not the current one. Evolution is barely interested in the survival of the current generation once they have reproduced, and is almost exclusively focused on the ability of the new generation to reach the age of reproduction and reproduce. Therefore, to be consistent with the vernacular, "survival of the fittest" could be rephrased as, "Propagation of the reproducers" or simply "Reproducers reproduce". But to be more to the point we should define the word, "allele."
Genes are made up of variants called alleles. A common example is eye color - i may have blue eyes and you may have brown eyes, and this results from differences in our genetic makup. Briefly, an allele is a different variety of any given gene - it will be located at the same location in the chromosome, but the sequence of the DNA for each allele will vary, usually slightly. These small changes cause small variations in the characteristics that each gene is responsible for. For example, eye color varies because of different alleles - the allele responsible for blue eyes, brown eyes, etc - but we all still have color to our eyes. It is usually a subtle, not a major change. These alleles are really what evolution is interested in.
Armed with the knowledge that alleles are slight variants of gene sequence for any given gene, and that alleles may cause changes in the characteristics of the individuals who have those alleles in their DNA, defining evolution is simple: "Evolution is the change in allele frequencies in a population over time." the key concepts are CHANGE, FREQUENCY, POPULATION, and TIME.
Tuesday, February 23, 2010
A Reservoir of Living Water
Tuesday, January 26, 2010
Hilarious
And, as popularized during my undergraduate years: "Whoever brings up the Nazis first, loses."
Sunday, January 24, 2010
Instructions and Responsibilities
… Fathers are responsible to preside over their families.
If my boy needs counseling, bishop, it should be my responsibility first, and yours second.
If my boy needs recreation, bishop, I should provide it first, and you second.
If my boy needs correction, that should be my responsibility first, and yours second.
If I am failing as a father, help me first, and my children second.
Do not be too quick to take over from me the job of raising my children.
Do not be too quick to counsel them and solve all of the problems. Get me involved. It is my ministry.
We live in a day when the adversary stresses on every hand the philosophy of instant gratification. We seem to demand instant everything, including instant solutions to our problems. …
It was meant to be that life would be a challenge. To suffer some anxiety, some depression, some disappointment, even some failure is normal.
Teach our members that if they have a good, miserable day once in a while, or several in a row, to stand steady and face them. Things will straighten out.
There is great purpose in our struggle in life.
The principle of self-reliance or personal independence is fundamental to the happy life.
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