Male Patterned Baldness
By: Kyra Braun
Male Patterned Baldness Pedigree
MALE PATTERNED BALDNESS IS...
With Hair or Without Hair?
Phenotypes and Genotypes
Generation 1:
"Bob" Male heterozygous (Aa) -> With hair (But carries baldness trait)
"Sue" Female heterozygous (Aa) -> With hair (But carries baldness trait)
Generation 2:
"Mary" Female heterozygous (Aa) -> With hair (But carries baldness trait)
-> Marries "Mike" Male heterozygous (Aa) -> With hair (But carries baldness trait)
"Jack" Affected Male (aa) -> Bald
-> Marries "Jill" Female (A-)
Generation 3:
---------> Mary's Children
-->"May" and "June" Twins (A-)
--> "Ted" Affected Male (aa) -> Bald
---------> Jack's Children
-->"Phil" Male heterozygous (Aa) -> With hair (But carries baldness trait)
Questions?
How can a family pedigree be useful when discussing your medical history with a doctor?
- By using your family pedigree, you can determine which genetic disorders you may have.
Under what conditions of inheritance can a pedigree predict with 100 percent certainty what they genotype of an offspring will be?
- If the alleles are homozygous dominant for both parents, then the genotype with be the same.