comp book open your comp book to pg. 51 to take notes. set up your notes cornell style. remember:...
DESCRIPTION
Genetics of Blood Your blood type is part of your genes, like your hair color or eye color. Your father gives you 1 chromosome with 1 blood type allele. Your mother gives you 1 chromosome with 1 blood type allele.TRANSCRIPT
Comp book
Open your comp book to pg. 51 to take notes.
Set up your notes Cornell style.
Remember: The best notes are notes that you organize on your own. Try not to copy.
EQ: What are the genotypes and
phenotypes of blood type?
Genetics of BloodYour blood type is part of your genes, like your hair color or eye color.
Your father gives you 1 chromosome with 1 blood type allele.
Your mother gives you 1 chromosome with 1 blood type allele.
Alleles
•There are 3 alleles for blood type:– A– B– O
Dominant & Recessive
• O is recessive • A is dominant• B is dominant
Genotypes•There are 3 alleles for blood type:
– A– B– O
•So, there are 6 possible genotypes:– AA– AO– BB– BO– OO– AB
Genotypes & Phenotypes
Genotypes PhenotypesAA Type A
AO Type A
BB Type B
BO Type B
OO Type O
AB Type AB
Genotypes & Phenotypes
Some blood types have certain types of antigens on the surface of the cells.
Co-dominantBlood type is a co-dominant gene.
There are 3 kinds of genes:
-Complete dominance (like the B & b traits we’ve been learning – Your earlobe is either attached or it’s not)
-Incomplete dominance (Some genes blend together; you’ll learn about these in high school or college –
A red flower and a white flower make seeds for pink flowers)
-Codominance (more than one dominant allele exists, and they can both show up together – A blue fish
and red fish have babies that are both blue and red)
Co-dominant
Codominance - more than one dominant allele exists, and they can both show up together
A & B are both dominant. O is recessive.
A + B = Type AB
but
A + O = Type A
Dad has Type B blood type (phenotype) because he has a B gene and an O gene genotype.
Mom has Type A blood because she has an A gene and an O gene
Try it!
Dad has Type B blood type (phenotype) because he has a B gene and an O gene genotype.
Mom has Type A blood because she has an A gene and an O gene
Try it!
B O
O
A
Dad has Type B blood type (phenotype) because he has a B gene and an O gene genotype.
Mom has Type A blood because she has an A gene and an O gene
Try it!
B O
O
A AB AO
BO OO
Dad has Type B blood type (phenotype) because he has a B gene and an O gene genotype.
Mom has Type A blood because she has an A gene and an O gene
Try it!
B O
O
A AB AO
BO OOAB (Type AB) = 25%AO (Type A) = 25%BO (Type B) = 25%OO (Type O = 25%