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Blood Types. Genetics of Blood Your blood type is established before you are born, by specific genes inherited from your parents.

Published byDrusilla Dalton Modified over 9 years ago

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Presentation on theme: "Blood Types. Genetics of Blood Your blood type is established before you are born, by specific genes inherited from your parents."— Presentation transcript:

1 Blood Types

2 Genetics of Blood Your blood type is established before you are born, by specific genes inherited from your parents.

3 Genotypes & Phenotypes There are 3 alleles or genes for blood type: –A –B –O

4 Dominant & Recessive O is recessive A is dominant B is dominant

5 Genotypes & Phenotypes There are 3 alleles or genes for blood type: –A –B –O So, what are the 6 possible genotypes?

6 Genotypes & Phenotypes

7 GenotypesPhenotypes AAType A AOType A BBType B BOType B OOType O AB?

8 Co-dominant When the dominant B allele gets paired with the dominant A allele… A BA B A new blood type results…AB

9 Genotypes & Phenotypes GenotypesPhenotypes AAType A AOType A BBType B BOType B OOType O ABType AB

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Blood Types Objective: Determine how blood types are inherited and how co-dominance applies to the ABO system.
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Simple Traits One gene pair Only two alleles Genotypes Phenotypes Examples.
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A physical characteristic like eye color.. A small part on a chromosome that controls a trait.

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Codominance co- is together.  Refers to a relationship between two alleles of a gene. Both traits appear in an organism. They do not overpower each.

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