chromosome - A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes., DNA - The molecule inside cells that contains the genetic information responsible for the development and function of an organism, Gene - The basic unit of heredity passed from parent to child, Allele - the alternative form or versions of a gene., Heredity - the passing on of physical or mental characteristics genetically from one generation to another., Phenotype - an individual's observable traits, such as height, eye color and blood type., Genotype - the entire set of genes in the cells of an organism, Heterozygous/Hybrid - The presence of two different alleles at a particular gene locus., Homozygous/Purebred - describes two identical copies of alleles in the DNA gene sequence that encodes for a particular trait., Genetics - The study of genes and heredity, Probability - the chance that a certain event will occur, Inheritance - the process by which genetic information is passed on from parent to child., Punnett Square - A tool that helps to show all possible allelic combinations of gametes in a cross of parents with known genotypes, Trait - a specific characteristic of an individual, Dominant alleles - a variation of a gene that will produce a certain phenotype, even in the presence of other alleles., Recessive alleles - A type of allele that when present on its own will not affect the individual,

Genetics Vocabulary

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