| A | B |
| asexual reproduction | all genes passed on to an offspring come from ONE parent |
| biotechnology | combination of technology and biological sciences |
| body cell | non-reproductive cells such as skin, liver and muscle cells; contain the full number of chromosomes typical of the species |
| bond | chemical link between atoms that hold molecules together |
| chromosome | thick, thread-like structure that contains genetic information in the form of DNA |
| clone | organ that is genetically identical to the organism from which it was formed |
| DNA | material found in all cells containing genetic information about that organism |
| egg | female sex cell |
| expressed | way that an unseen gene is seen in an organism as an actual physical trait |
| genes | segment of DNA that contains a code for a specific trait |
| genetic engineering | way humans alter the genetic instructions of an organism by substituting DNA molecules |
| genetic recombination | formation of a new combination of genes during sexual reproduction |
| heredity | passing of traits from parent to offspring |
| mutation | any alteration of the sequence of DNA |
| replicate | to copy |
| selective breeding | process of choosing organisms with desirable traits to serve as parents |
| sperm | male sex cell |
| subunit | section of DNA that contains a sugar, a phosphate, and a base |
| template | pattern for a new molecule |
| traits | characteristic that is passed from parent to offspring throught he genes |