click below
click below
Normal Size Small Size show me how
Genetics - 530-535
Terms from 7th Grade Prentic Hall Science Explorer, pages 530-535
| Question | Answer |
|---|---|
| A priest in the mid nineteenth century that did experiments with pea plants that revolutionized the study of heredity. | Gregor Mendel |
| The passing of physical characteristics from parents to offspring. | Heredity |
| Different characteristics in genetics are called what? | Traits |
| The study of heredity | Genetics |
| The process where a new organism begins to form when the egg and sperm join. | Fertilization |
| The process of pollen reaching the pistil of a flower so fertilization can occur. | Pollination |
| The offspring of many generations that have the same trait. | Purebred |
| The parental generation is represented by what symbol? | P |
| The first filial generation (offspring of parental generation)is represented by what symbol? | F1 |
| The second filial generation (offspring of F1 generation) is represented by what symbol? | F2 |
| The factors that control a trait. | Gene |
| Different forms of a gene which controls the traits an organisms inherits from its parents. | Alleles |
| An allele whose traits always show up in the organism when the allele is present. It is represented by a capital letter. | Dominant Allele |
| An allele that is hidden whenever the dominant allele is present. It is represented with a lower case letter. | Recessive Allele |
| An organism that has two different alleles for a trait. | Hybrid |
| What carries the information that controls inherited characteristics | Chromosomes |
| Having two different alleles for a trait. | Heterozygous |
| Having two identical alleles for a trait. | Homozygous |
| Genetic makeup of an organism | Genotype |
| Observable physical traits of an organism. | Phenotype |