The mechanism of Darwinian evolution absolutely works — by breaking genes, when that provides a selective advantage, or turning them off.
I do not know Dr. Merilä’s stance on human origins, but it is a safe bet that he denies intelligent design, and believes humans evolved from other animals.
An evolutionist dismantles natural selection, then tries to rescue it with his own theory. It won’t work.
Scientists in Australia have uncovered that more adults now possess a “median artery of the forearm,” contrasted with studies over the past two centuries.
It is a difficult question because, setting aside many other problems, the very starting point — the protein-coding gene — is highly complex.