“There are powerful methods for studying the genetic and environmental origins of individual differences, but not for studying the causes of average differences between groups,” Dr. Plomin writes in an afterword to be published this spring in the paperback edition of his book, “Blueprint: How DNA Makes Us Who We Are.”
Whether Dr. Watson was aware of any of this science is unclear. In the film, he appears to have grown increasingly isolated. He mentions missing Francis Crick, his collaborator in the race to decipher the structure of DNA.
“We liked each other,’’ Dr. Watson says of Dr. Crick. “I couldn’t get enough of him.’’
As history now knows, the duo was able to solve the puzzle in 1953, with their hallmark models of cardboard and metal only with the help of another scientist, Rosalind Franklin, whose X-ray photograph of the DNA molecule was shown to Dr. Watson without her permission.
The tools of molecular biology unlocked by their discovery have since been used to trace humanity’s prehistory, devise lifesaving therapies, and develop Crispr, a gene-editing technology that was used recently, and unethically, to alter the DNA of twin human embryos.
And Dr. Watson became perhaps the most influential biologist of the second half of the 20th century. His textbook, “Molecular Biology of the Gene,’’ helped define the new field. First in a laboratory at Harvard and then at Cold Spring Harbor, he trained a new generation of molecular biologists and used his star power to champion such projects as the first sequencing of the human genome.
“You knew when you heard him that you were at the start of a revolution in understanding,’’ Nancy Hopkins, a biologist at the Massachusetts Institute of Technology who studied with Dr. Watson in the 1960s, says in “Decoding Watson.’’
“You felt as if you were part of this tiny group of people who had seen the light.’’
Mr. Mannucci, the director and producer, was drawn to his subject by a certain similarity to “the King Lear story’,’ he said — “that this man was at the height of his powers and, through his own character flaws, was brought down.” The film highlights Dr. Watson’s penchant for provocation, exemplified by his candid 1968 memoir, “The Double Helix,” of the race to decipher DNA’s structure.