Genetic Engineering basically is the modification of genes through biotechnology. It means you can in theory play with DNA of various things. It has been practices for centuries and advances in technology mean it is continuously getting better and better. Being used in medicines and other scientific advances.
It allows you to add and remove genes from organisms and make your own sequences of DNA. An organism that is created through genetic modification is known as a GMO (Genetically Modified Organism). The first known work of this was in 1974 and has since advances to genetically modified food that has now been selling since 1994.

There is much controversy in the use of genetically modifying. There are many ethical and ecological concerns to do with this. There are also concerns over the fact that humans are consuming food that has been genetically modified and worries that it may not actually be safe and natural to consume such products. There have been many debates and protests in most countries in the use of genetic engineering.
This relates to my character because of course he designs babies for couples. He chooses what they look like personalities etc because the government within the play are very strict at standards set for all children and babies that are born.