Rob
INO PUNNET SQUARES
Z(N)Z(N): pure/homozygous normal male
Z(N)Z(n): male split/heterozygous for ino, looks normal
Z(N)W: normal female
Z(n)W: ino female
I'm going to redo the first two for the sake of clarity.
1.) If ino bird is female, male is homozygous normal:
................................Z(n)............W
.
................. Z(N)......Z(N)Z(n)......Z(N)W
.
..................Z(N)......Z(N)Z(n)......Z(N)W
0% of all offspring look ino.
Genetically...
50% are non-ino females, and will never pass on an ino allele.
50% are males split to ino. They do not look ino, but will pass on an ino allele 50% of the time.
2.) If ino bird is male, female is normal :
................................Z(N)............W
.
................. Z(n)......Z(N)Z(n)......Z(n)W
.
..................Z(n)......Z(N)Z(n)......Z(n)W
50% of all offspring, 0% male and 100% female, look ino.
Genetically...
50% are ino females. They will always pass an ino allele to their male offspring, and never pass an ino allele on to their female offspring.
50% are males split to ino. They do not look ino, but will pass on an ino allele 50% of the time.
3.) If ino bird is female, male is split to ino:
................................Z(n)............W
.
................. Z(N)......Z(N)Z(n)......Z(N)W
.
..................Z(n)......Z(n)Z(n)......Z(n)W
50% of all offspring, 50% male and 50% female, look ino.
Genetically...
25% are ino males. They will always pass on the ino allele.
25% are ino females. They will always pass an ino allele to their male offspring, and never pass an ino allele on to their female offspring.
25% are non-ino females, and will never pass on an ino allele.
25% are males split to ino. They do not look ino, but will pass on an ino allele 50% of the time.
Here's where you have ino-ino pairings.
4.) If male and female birds are inos:
................................Z(n)............W
.
................. Z(n)......Z(n)Z(n)......Z(n)W
.
..................Z(n)......Z(n)Z(n)......Z(n)W
100% of the birds look ino.
Genetically...
50% are homozygous ino males. They will always pass on an ino allele.
50% are ino females. They will always pass on an ino allele to their male offspring, and never pass on an ino allele to their female offspring.
And now normal-normal pairings, which will not apply to your ino bird, but may do so for its offspring.
5.) If female is normal, male is split to ino:
................................Z(N)............W
.
................. Z(N)......Z(N)Z(N)......Z(N)W
.
..................Z(n)......Z(N)Z(n)......Z(n)W
25% of all offspring, 50% of females and 0% of males, look ino.
Genetically...
25% are homozygous normal males. They will have normal-looking offspring no matter who they are paired to.
25% are normal females. They can only have female ino offspring if the male they are paired to is ino or split to ino.
25% are males split to ino. They do not look ino, but will pass on an ino allele 50% of the time.
25% are ino females. Ino females will always pass an ino allele to their male offspring, and never pass an ino allele on to their female offspring.
6.) If male is homozygous normal, female is normal:
................................Z(N)............W
.
................. Z(N)......Z(N)Z(N)......Z(N)W
.
..................Z(N)......Z(N)Z(N)......Z(N)W
0% of birds look ino.
Genetically...
50% are non-ino females. They can only have female ino offspring if the male they are paired to is ino or split to ino.
50% are homozygous normal males. They will have normal-looking offspring no matter who they are paired to.
I can make some pied punnet squares as well, if you'd like. They're quite a bit simpler than these.