Blood Types The Genetics of Blood Type.

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Presentation transcript:

Blood Types The Genetics of Blood Type

Codominance Both alleles are Dominant. Neither allele for a trait is recessive. They both express themselves in the phenotype. Genotype labels are: I I I = blood: A=type A coded protien B=type B coded protien A B

The Genetics of Blood Type Phenotype Genotype

The Genetics of Blood Type Phenotype Genotype A

The Genetics of Blood Type Phenotype Genotype A B

The Genetics of Blood Type Phenotype Genotype A B AB

The Genetics of Blood Type Phenotype Genotype A (I ) B AB O (recessive)= i A B

The Genetics of Blood Type Phenotype Genotype A+ ( + = antibodies against B type blood) A- ( - = no antibodies against B type blood) B ( + is dominant over - ) AB O

The Genetics of Blood Type Phenotype Genotype A+ ( + will attack other blood types ) A- B+ B- AB+ AB- O+ O-

The Genetics of Blood Type Phenotype Genotype A+ AA++ A- B+ B- AB+ AB- O+ O-

The Genetics of Blood Type Phenotype Genotype A+ AA++, AO++ A- B+ B- AB+ AB- O+ O-

The Genetics of Blood Type Phenotype Genotype A+ AA++, AO++, AA+- A- B+ B- AB+ AB- O+ O-

The Genetics of Blood Type Phenotype Genotype A+ AA++, AO++, AA+-, AO+- A- B+ B- AB+ AB- O+ O-

The Genetics of Blood Type Phenotype Genotype A+ 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--

The Genetics of Blood Type Donor/Recipient?

The Genetics of Blood Type How can we predict Blood Type inheritance?

The Genetics of Blood Type How can we predict Blood Type inheritance? Using a Punnett square!

The Genetics of Blood Type How can we predict Blood Type inheritance? Using a Punnett square! Let’s look at possible blood types of the children of a couple whose blood types are AB- and O-.

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-.

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO--

The Genetics of Blood Type A- AO-- B- BO-- Phenotype A- B-

The Genetics of Blood Type Your homework: Blood Types Worksheet