17.4 - Multiple Alleles Flashcards
What multiple alleles are The ABO blood group system as an example of multiple alleles Inheritance of the ABO blood group
1
Q
What are multiple alleles?
A
Genes with more than two allelic forms
2
Q
How many alleles can an individual have for a specific gene?
A
Two
3
Q
What is the ABO blood group system an example of?
A
Multiple alleles
4
Q
What gene controls the ABO blood group system?
A
Immunoglobulin (I) gene
5
Q
Which alleles are codominant in the ABO blood group system?
A
IA and IB
6
Q
Which allele is recessive in the ABO blood group system?
A
IO
7
Q
What are the possible blood group phenotypes?
A
A
8
Q
What genotype results in blood type A?
A
IAIA or IAIO
9
Q
What genotype results in blood type B?
A
IBIB or IBIO
10
Q
What genotype results in blood type AB?
A
IAIB
11
Q
What genotype results in blood type O?
A
IOIO
12
Q
What is the phenotypic ratio of offspring from IAIO and IBIO parents?
A
1:1:1:1 (A:B:AB:O)
