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Pedigrees

8th Grade Life Science

QuestionAnswer
Trait that is located on an autosome (non-sex chromosome) autosomal trait
Chart that shows the presence or absence of a trait within a family across generations. pedigree
Trait that is located on one of the two sex chromosomes sex-linked trait
The physical characteristics of an organism (ex: tall) phenotype
The genetic makeup of an organism (ex: TT) genotype
Allele that is only expressed in absence of a dominant allele recessive allele
Having two identical (same) alleles for a particular gene homozygous
Having two different alleles for a particular gene heterozygous
Allele that is phenotypically expressed over another allele. dominant allele