Pedigrees Flashcards
Square in a pedigree means?
male
Circle in a pedigree means?
female
Lines between a male and a female represent?
marriage
Lines extending from the marriage line represent?
offspring
Shaded in circle/square represents?
affected person/person affected with the trait
Unshaded in circle/square represents?
Unaffected person/person that doesn’t have the trait
Roman Numerals on the side represent?
generations
How can you tell if a trait is autosomal dominant in a pedigree?
when 2 parents show the trait but the offspring does not
How can you tell if a trait in a pedigree is autosomal recessive?
when 2 parents don’t have the trait but the offspring does
How can you tell if a trait is sex-linked recessive?
high number of sons with the trait