The mutation of bacteria and viruses are merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect. (Pierre-Paul Grassé)

The mutation of bacteria and viruses are merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect.

Pierre-Paul Grassé

Related topics

final left mutation position right

Related quotes