How does natural selection affect the evolution of species on Earth?
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
How does selection enhance the effects of other forces of microevolution?
While natural selection selects the fittest individuals and often results in a more fit population overall, other forces of evolution, including genetic drift and gene flow, often do the opposite: introducing deleterious alleles to the population’s gene pool.
How does selection affect allele frequencies?
Natural selection also affects allele frequency. If an allele confers a phenotype that enables an individual to better survive or have more offspring, the frequency of that allele will increase.
What scientific concept would most people do well to understand and exploit?
The scientific concept that most people would do well to understand and exploit is the one that almost defines science itself: the controlled experiment. When required to make a decision, the instinctive response of most non-scientists is to introspect, or perhaps call a meeting.
What did Descartes contribute to the theory of knowledge?
This entry focuses on his philosophical contributions in the theory of knowledge. Specifically, the focus is on the epistemological project of his famous work, Meditations on First Philosophy. Descartes circulated the Meditations to other philosophers for objections and comments.
Is the controlled experiment the best way to discover truths?
Yet none of this takes away from the fact that the controlled experiment is the best method yet devised to reveal truths about the world, and we should use them wherever they can be sensibly applied. That idea, or bundle of ideas, seems to me the most important revolution in general thinking in the last 150 years.
How did Descartes circulate the Meditations to other philosophers?
Descartes circulated the Meditations to other philosophers for objections and comments. He responded with detailed replies that provide a rich source of further information about the original work.