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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 |