Name: ____________________
Types of Inheritance
Inheritance Pattern
Who can be a carrier?
Example of Disorder
Dominant Allele
MM – Marfan
Mm – Marfan
mm – normal height
No one – you either
have the trait or you
don’t
Marfan Syndrome
Recessive Allele
AA – normal skin
Aa – normal skin
aa – no pigment
Any male or female
with one dominant and Albinism
one recessive allele
(one capital, one
lowercase)
RR – normal cells
RS – half normal, half
sickle
SS – sickle cells
Any male or female
with one of each allele
(one R, one S)
XHXH – normal female
XHXh – carrier female
XhXh – female w/trait
XHY – normal male
XhY – male w/trait
Only females – males
only have one allele
for the trait, females
have two
Co-Dominant Allele
Sex-Linked Gene
Allele Combinations
Sickle-cell anemia
Hemophilia
Punnett Square Example