BloodType 2
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Transcript of BloodType 2
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Blood TypesThe Genetics of Blood Type
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Codominance
Both alleles are Dominant.
Neither allele for a trait is recessive.
They both express themselves in thephenotype.
Genotype labels are: I I
I = blood: A=type A coded protien
B=type B coded protien
A B
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Phenotype Genotype
The Genetics of Blood Type
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Phenotype GenotypeA
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Phenotype GenotypeA
B
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Phenotype GenotypeA
B
AB
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Phenotype GenotypeA (I )
B (I )
AB
O (recessive)= i
The Genetics of Blood Type
A
B
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Phenotype GenotypeA+
A-
B
(+ is dominant over- )
AB
O
The Genetics of Blood Type
( + = Rh factor, protein on cell, Antigen.Will be recognized by immune system
as part of body. )
( - = no Rh factor antigen. If body comes incontact with +, it wont recognize it as part ofthe body and will reject it )
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The Genetics of Blood Type
Donor/Recipient?
http://chapters.redcross.org/br/northernohio/INFO/bloodtype.htmlhttp://chapters.redcross.org/br/northernohio/INFO/bloodtype.html -
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Phenotype GenotypeA+
A-B+
B-
AB+AB-
O+
O-
The Genetics of Blood Type
If Immune system doesnt recognize a protein,
A or B, itll reject it.
A -Rh will not recognize +Rh and reject it.
Can receive: B+B-O+O- Will reject A+-AB+-
Can receive: B-O- Will reject A+-B+AB+-O+
Can receive: ALL blood types
Can receive: All types Will reject all + types
Can receive: O+O- Will reject all others
Can receive: O- Will reject all others
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Phenotype GenotypeA+ AA++
A-
B+B-
AB+
AB-O+
O-
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Phenotype GenotypeA+ AA++, AO++
A-
B+B-
AB+
AB-O+
O-
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Phenotype GenotypeA+ AA++, AO++, AA+-
A-
B+B-
AB+
AB-O+
O-
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Phenotype GenotypeA+ AA++, AO++, AA+-, AO+-
A-
B+B-
AB+
AB-O+
O-
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Phenotype GenotypeA+ AA++, AO++, AA+-, AO+-
A- AA--, AO--
B+ BB++, BO++, BB+-, BO+-B- BB--, BO--
AB+ AB++, AB+-
AB- AB--O+ OO++, OO+-
O- OO--
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The Genetics of Blood Type
How can we predict Blood Type inheritance?
Using a Punnett square!
Lets look at possible blood types of the childrenof a couple whose blood types are AB- and O-.
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The Genetics of Blood Type
First we need to determine their genotypes.
Looking at our chart, the genotype for AB- is AB--
and the genotype for O- is OO--.
We need to FOIL and then draw a Punnett square.
From one parent we can get A- or B-From the other we can only get O-.
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
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The Genetics of Blood Type
O-
A- AO--
B- BO--
Phenotype
A-
B-
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The Genetics of Blood Type
Your homework:
Blood Types Worksheet
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