Pedigrees Lecture Notes
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9 Terms
Pedigree
A diagram that shows the genotypes and phenotypes of organisms from one generation to the next; similar to a family tree.
Square
Represents a male in a pedigree.
Circle
Represents a female in a pedigree.
Horizontal Line
Indicates that two individuals are parents and have offspring.
Dominant Trait
When both parents and offspring have a trait, the trait is…
Recessive Trait
If offspring have a trait but parents don’t, the trait is…
Sex-linked Pedigree
If mostly males are affected, the pedigree is…
Autosomal Pedigree
If both males and females are affected equally, the pedigree is…
Carriers
Individuals that are heterozygous for a trait.
Note 
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