(used with a singular verb) the branch of biology concerned with the transfer of genes to other species.
(used with a plural verb) the techniques for creating organisms that have genes from other species.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(functioning as singular) the branch of biology concerned with the transfer of genetic material from one species to another
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012