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(Mendelian Genetics

defintions of words.

TermDefinition
Genetics the genetic properties or features of an organism, characteristics, etc.
Genes a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
Genotype the genetic constitution of an individual organism.
Phenotype the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
Dominant Dominant refers to the relationship between two versions of a gene.
Recessive Refers to a trait that is expressed only when genotype is homozygous
Homozygous The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.
Heterozygous The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
Alleles One of two or more DNA sequences occurring at a particular gene locus.
Heredity the passing on of physical or mental characteristics genetically from one generation to another.
Created by: enyah
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