Now come on. Darwinian evolution postulates that slow gene mutations over many millions of years produce new species. But the New York Times just published an article by an evolutionary biologist that claims city-dwelling blackbirds have stockier bills, sing at a higher pitch and have less nervous personalities. “The birds’ DNA after 200 years or less of adaptation, has diverged from that of their rural ancestors,” says the biologist, who says biologists now understand evolution can happen very quickly. Really? Are we seeing new species?
What we are seeing is adaptation, which occurs epigenetically. Genetic changes (called mutations) materialize as the sequence of nucleotides (steps) on the DNA ladder are altered. Epigenetics is when genes produce proteins (gene expression) or cease to produce proteins (gene silencing). Chronic exposure to environmental factors (solar radiation, food, pollution) may imprint a modifiable pattern of epigenetic gene expression that is then passed on to subsequent generations.
The biologist refers to that finch outside of his residence as Darwin’s finch and New York City as his Galapagos. That statement refers to Darwin’s drawings of changes in the shape of bird beaks he observed during his two trips to the Galapagos Islands that lasted two months each. No millions of years passed before Darwin noted these changes either. Darwinism is no more real than Superman or Santa Claus. [New York Times July 23, 2016]