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Ch 12 Genetics
| Question | Answer |
|---|---|
| mitosis | cell's nucleus divides into two new nuclei, and one copy of DNA is distributed into each daughter cell |
| genetics | the scientific study of heredity |
| heredity | passing of physical characteristics from parents to offspring |
| trait | each specific characteristic |
| gene | factors that control a trait |
| allele | a different form of a gene |
| probability | how likely an event will occur |
| Punnett square | chart that shows all possible ways alleles can combine in a genetic sequence |
| phenotype | organism's physical appearance or visible trait |
| genotype | organism's genetic makeup or alleles |
| homozygous trait | organism that has two identical alleles for a trait |
| heterozygous trait | organism that has two different alleles for a trait |
| meiosis | the process by which the number of chromosomes is reduced by half as sex cells form |
| nucleus | dense area in a cell that contains nucleic acid |
| clone | an organism that has exactly the same genes as the organism from which it was produced |