Jerry Coyne, who teaches at the University of Chicago, is writing a book on the origin of species.
A recent Radio Four programme had a distinguished retired geneticist, who is also a devout Christian, pondering the virgin birth. Jesus, it turned out, is something of a biological conundrum. As a male, he must have carried a Y-chromosome, which can be transmitted only by the father’s sperm, yet apparently he had no corporeal father. Where, then, did his Y-chromosome come from? The...
As I write, machines around the world are chewing up human chromosomes and spitting out the raw DNA sequence at an astounding rate of 5 billion bases a year. The four nucleotides that make up the sequence of DNA – adenine, guanine, cytosine and thymine – are represented by their initial letters, A, G, C, T. If we take each of these as equivalent to a letter of the alphabet, the machines are producing text roughly as long as 18 copies of The Origin of Species a day. By the time you read this, the project will be nearly done, though it may take another year to align the bits of sequence and fill in the gaps.
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