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Family Pedigree of the Dimple Trait

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by

tina douglass

on 19 December 2014

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Transcript of Family Pedigree of the Dimple Trait

Family Pedigree of Dimple Trait
Bobby
Key:
=dominant male
=dominant female
=recessive male
=recessive female

Dad
no dimples, recessive
dd (homozygous recessive)
Isabelle Douglass
Raymond Douglass
Heterozygous (Dd)
Shows dimples, but carries recessive trait
Mom
Suzanne Hubbell
Paul Hubbell
Me
Lauren
David
Alan
Gene Dominance
having dimples is dominant, no dimples is recessive
DD=homozygous dominant
Dd=heterozygous
dd=homozygous recessive
I have dimples, therefore I'm either Dd or DD
Does not display dimple trait, so must be dd.
Heterozygous, Dd
Shows dimple trait, but carries recessive trait
D
d
D
d
DD
Dd
Dd
dd
x
Isabelle (Grandmother)
Robert (grandad)
my dad
Ray
Homozygous dominant, DD or Dd
Shows dimple trait
Jim
Dd or DD
Has dimples, possibly has recessive trait (d)
Susan
Has no dimples
Must be dd
No dimples
dd or homozygous recessive
Heterozygous or Dd
Dimples
No dimples
dd or homozygous dominant
Has dimples
Heterozygous or Homozygous dominant, Dd or DD
Dimples
Heterozygous or Homozygous Dominant
Has dimples
Heterozygous, Dd (there is no dominant allele to take from both sides, only one)
D
d
d
d
Dd
Dd
dd
dd
x
Mom
Dad
Bobby
me
d
d
D
d
Dd
dd
Dd
x
Suzanne (Grandmother)
Paul (grandfather)
my mom
dd
Full transcript