Morphogene is a term that refers to a gene that regulates the growth and development of an organism. There are a few synonyms that can be used to describe the same concept. One of the synonyms could be a developmental gene. Another alternative is a growth factor, which refers to a protein that stimulates cell division and differentiation in living cells. A third synonym for morphogene could be a morphogen, which is a substance that provides positional information during development to contribute to the formation of an organism's shape. In other words, all these synonyms refer to genes or molecules that play a specific role in the development and growth of an organism.