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Shinlever Heredity

Terms from the Heredity Unit

dominant Mendel’s name for an inherited trait that appeared in the heterozygous individual.
recessive Mendel’s name for an inherited trait that is hidden or masked by the dominant trait in the heterozygous individual.
genotype An organism’s genetic make up composed of a pair of alleles.
phenotype Observed characteristic or expressed trait that results from an allele pair.
allele Version of a gene for a single gene trait.
inheritance Passing of genetic information (traits) from parent to offspring.
purebred Only possessing one version of a gene for a particular trait (homozygous).
hybrid Containing two contrasting alleles for a genetic trait (heterozygous).
dihybrid cross A genetic cross looking at two traits where each parent is hybrid for each trait.
homozygous Purebred, containing only one version of a gene.
heterozygous Hybrid, containing one dominant and one recessive allele for a trait.
pedigree Diagram of a family history used to study inheritance patterns of a trait through several generations that can be used to predict disorders in future offspring.
codominant Complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed.
incomplete dominance Complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the homozygous parent organisms.(a blending of phenotypes)
multiple alleles Having more than two alleles for a particular trait.
polygenic Characteristic such as eye color or skin color , that results from the interaction of multiple gene pairs.
autosomal A disease resulting from a mutation on an autosome chromosome; not sex-linked.
sex-linked A disease that disproportionately affects one sex usually resulting from a mutation on the X chromosome.
Created by: jshinlever



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