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Genetics - 530-535

Terms from 7th Grade Prentic Hall Science Explorer, pages 530-535

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
Created by: eblanchard