| A | B |
| punctuated equilibrium | the theory that evolution occurs in spurts |
| prokaryotic cell | a cell that does not contain a nucleus |
| quantitative data | information obtained through an investigation that can be described by numerical measurements |
| recessive | an allele that does not produce a characteristic effect when present with a dominant allele |
| primary succession | what follows on a site where the disturbance was so great that no living matter survived |
| protists | single-celled organisms; a type of eukaryote |
| purebred | containing identical alleles for a particular trait |
| Punnett square | used to demonstrate possible combinations of alleles from genetic crosses |
| protein | complex organic compound that consists of amino acids joined by peptide bonds |
| resource depletion | resources are removed faster than they can replace themselves |
| recombinant DNA | when DNA pieces from two different organisms are joined together |
| protein synthesis | the process using DNA, RNA, and amino acids to form proteins |
| radioactive dating | measures the amount of decay of a radioactive element, such as uranium, to determine the age of an object |
| renewable resource | a resource that can be renewed, such as trees |
| qualitative data | information obtained through an investigation that can be described by words rather than numerical measurements |