| A | B |
| cloning | the process of creating genetically identical organisms by replicating an exact DNA molecule |
| embryo | stage of development from fertilization to birth |
| DNA | the genetic makeup of an organism |
| test-tube baby | organism developed from in vitro fertilization |
| in vitro fertilization | uniting of sperm and egg in a laboratory setting |
| surrogate mother | a female host for an embryo from another female |
| nuclear transfer | removal of DNA from an unfertilized egg and introduction of a nucleus from a specifically prepared cell |
| mitosis | simple cell division |
| transgenic | an organism that has genes inserted into it from another organism |
| meiosis | cell division that produces cells with one half of the number of original chromosomes and is used for sex cell production |
| genes | these control inherited traits in an organism such as hair, eye, and skin color |
| cell | smallest unit of life capable of independent existence |