Problem 7
Color pattern in a species of duck is determined by
one gene with three alleles. Alleles H and I are codominant, and
allele i is recessive to both. Note: this situation is similar to
the ABO blood system.
How many phenotypes are possible in a flock of
ducks that contains all the possible combinations of these three
alleles?
As in the ABO blood system 4
phenotypes are possible in this case:
|
Genotype
|
Phenotype
|
|
|
|
|
HH,
Hi
|
(H)
|
|
II,
Ii
|
(I)
|
|
HI
|
(HI)
|
|
ii
|
(i)
|
