Explanation: In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they called a "double helix," in the journal Nature. For this breakthrough discovery, Watson, Crick, and their colleague Maurice Wilkins won a Nobel Prize in Physiology, or Medicine, in 1962.
Answer: Francis Crick and James Watson (or Rosalind Franklin).
Explanation: After Crick and Watson took over the study that Franklin did, they managed to figure out the structure and the parts of the DNA. But specifically, Crick and Watson were the people who called the structure a “double helix”.
brothers and sisters don't look exactly alike because everyone (including parents) actually has two copies of most of their genes. And these copies can be different. Parents pass one of their two copies of each of their genes to their kids.
