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ch.12 human traits

mendelian inheritance of human traits

QuestionAnswer
carrier an individual heterozygous for a specific trait
fetus a developing mammal from nine weeks to birth
pedigree graphic representation of genetic inheritance used by geneticists to map genetic traits
autosome pairs of matching homologous chromosomes in somatic cells
codominant allel pattern where phenotypes of both homozygote parents are produced in heterozygous offspring so that both allels are equally expressed
incomplete dominance inheritance pattern where the phenotype of a heterozygote is intermediatw between those of the two homozygotes; neither allele of the pair is dominant but combined and display a new triat
multiple allele presence of more then two alleles for a genetic trait
polygenic inheritance inheritance pattern of a trait controlled by two or more genes; genes may be on the same or diffrent chromosomes
sex chromosome in humans the 23rd pair of chromosomes; determine the sex of an individual and carry sex linked characteristics
sex-linked trait traits controlled by genes located on sex cromosomes
karyotype chart of metephase chromosome pairs arranged according to length and location of the centromere; used to pinpoint unusual chromosome numbers in cells
Created by: wmbiology
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