The “Insights into hominid evolution from the gorilla genome sequence” report, published by the British journal Nature this last week, stands as a historical milestone in the study of human origins, sequencing the gorilla genome.
Aylwyn Scally (pictured right below) at the Wellcome Trust Sanger Institute led the research team to complete the gorilla genome sequence project, the last genus of the living great apes to have its genome decoded.
In The Origin of Species, Charles Darwin wove the eugenic philosophy of Plato into the theory of natural selection. As arguing that “extinction and natural selection go hand in hand,” perhaps unknowingly, Darwin legitimized the extinction by eugenics movements of the 20th century.
Eugenics originated in ancient cultures. Rome, Athens, and Sparta practiced eugenics to improve the strength and survival of their societies. Encouraged by his brother, Erasmus, Darwin read An Essay on the Principle of Population by Thomas Robert Malthus, an English political economist in 1838.
Natural selection is a simple scientific theory, according to the American Museum of Natural History, New York. For the museum’s Darwin Exhibit, the museum curator, Niles Eldredge, explains: “A century and a half ago, Charles Darwin offered the world a single, simple scientific explanation for the diversity of life on Earth: evolution by natural selection.”
“Natural selection.” Eldredge explains, “is a simple mechanism that causes populations of living things to change over time.”
Faced with the failure of the Stanley-Urey model to explain the origin of life, evolutionary scientists have been exploring the RNA World theory. With only the four nucleic acids required to form RNA (pictured left) rather than the twenty amino acids to form a protein, the chance probability tipped the advantage to the RNA-first theory, but that is not all.
In The Ancestor’s Tale: A Pilgrimage to the Dawn of Evolution, Richard Dawkins explains –
“This is the RNA World. To see how plausible it is, we need to look at why proteins are good at being enzymes but bad at being replicators; at why DNA is good at replicating but bad at being an enzyme; and finally why RNA might just be good enough at both roles to break out of the Catch-22.”
The consensus on the scientific validity of Charles Darwin’s theory of natural selection varies even between evolution scientists.
Richard Dawkins, perhaps the most famous advocate of evolution in the twenty-first century, explained that natural selection represents a “non-random survival of randomly varying hereditary instructions” in the article “The Illusion of Design,” published in the Natural History Magazine.
While Dawkin’s explanation of natural selection is widely popular, a consensus amongst evolution scientists remains a contentious issue.
