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Life Science-Chap 5
vocabulary words
| Question | Answer |
|---|---|
| heredity | passing of genetic traits from parents to offspring |
| dominant trait | trait observed in the first generation when parents that have different traits are bred |
| recessive trait | trait that is apparent only when two recessive alleles for the same characteristic are inherited |
| gene | a set of instructions for an inherited trait |
| allele | the different forms of a gene that governs a characteristic - like hair color |
| phenotype | an organism's appearance or other detectable characteristic |
| genotype | entire genetic makeup of an organism; also the combinations of genes for one or more specific traits |
| probability | likelihood that a possible future event will occur in any given instance of the event |
| homologous chromosomes | chromosomes that have the same sequence of genes and the same structures |
| meiosis | copying process that produces cells with half the usual number of chromosomes |
| sex chromosome | one of the pair of chromosomes that determine the sex of the individual |
| pedigree | a diagram that shows the occurrence of a genetic trait in several generations of a family |