| A | B |
|---|
| the first event in mitosis is ... | interphase |
| joins the two strands of a chromosome together | centrimere |
| are the only animals that are not coordinated by nerve cells | sponges |
| is the rearranging of genetic instructions | genetic recombination |
| chromosomes become attached to these during both mitosis and meiosis | spindle fibers |
| the individual strand of a double stranded chromosome | tetrad |
| organisms that produce their own food | autotroph |
| are multicellular heterotrophs that absorb food | fungi |
| enables biologists to study and identify organisms more easily | taxonomy |
| monerans such as bacteria and blue green algae are ... | prokaryotes |
| similarities may be used as a basis for classification | biochemical |
| the mass of material inside the nuclear membrane that forms chromosomes during cell division | chromatin |
| this process is nuclear replication in a cell | mitosis |
| meiosis and this provide for variation among offspring | fertilization |
| the fertilized egg that results when a sperm and an egg unite is called... | zygote |
| the theory of this states that under current conditions on earth, all organisms are produced from other organisms | biogenesis |
| many of the ideas that support the theory of this are used in classifying organisms | evolution |
| are complex, heterotrophic, multicellular organisms that ingest food | animals |
| scientists classify organisms according to the ____ of the organism | characteristics |
| Linnaeus devised a classification scheme based on the ________ similarities of organisms | structural |
