Genetics: the science of heredity, dealing with resemblances and differences of related organisms resulting from the interaction of their genes and the environment.http://www.genetics.org/
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e-breeding: when organisms that produce offspring identical to themselves if allowed to self-pollinate.Trait: a distinguishing characteristic or qualities.
http://www.uwm.edu/~caberg/mtp5/10genetics/proced.shtml
Hybrid: the offspring of two animals or plants of different breeds, varieties, species, or genera, esp. as produced through human manipulation for specific genetic characteristics. Gene: sequence of DNA that codes for a protein and thus determines a trait. http://www.accessexcellence.org/AE/AEPC/NIH/gene03.html
Allele: one of a number of different forms of a gene.
Segregation: seperation of alleles during gamete formation.
Gamete: specialized cell involved in sexual reproduction.
Probability: likelihood that a particulare event will occur.
Punnett Square: diagram showing the gene combinations that might result from a genetic cross.
Homozygous: an organism that has two identical alleles for a particular trait.http://foxtrotters.tripod.com/homozy.htm
Heterozygous: an organism that has two different alleles for the same trait.
Phenotype: physical characteristics of an organism.
Homologous: chromosomes that each have a corresponding chromosome from the opposite-sex parent. 
Diploid: a cell that contains both sets of homologous chromosomes.
Haploid: a cell that contains only a single set of chromosomes and therefore only a single set of genes.http://www.plant.uoguelph.ca/research/biotech/haploid/hap2.htm
Meiosis: process by which the number of chromosomes per cell is cut in half through the seperation of homologous chromosomes in a diploid cell.
Tetrad: structure containing 4 chromatids that forms during meiosis.Crossing-Over: process in which homologous chromosomes exchange portions of their chromatids during meiosis.
Gen map: diagram showing the relative locations of each known gene on a particular chromosome.
