Have your clickers ready! This is the last day
you’ll need them.
1.
2.
3.
4.
Complete
dominance
Incomplete
dominance
X-linkage
Multiple alleles
25%
25%
25%
25%
30
1
2
3
4
Countdown
1.
2.
3.
4.
At least a carrier
for white eyes.
White-eyed for
certain.
Red-eyed for
certain.
Pink-eyed for
certain.
25%
25%
25%
25%
30
1
2
3
4
Countdown
1.
2.
3.
4.
Type
Type
Type
Type
A
B
O
AB
25%
25%
25%
25%
30
1
2
3
4
Countdown
1.
2.
3.
4.
Gets both an
orange and a
black allele.
Has a calico
parent.
Has an XXY
karyotype.
Has a calico
father.
25%
25%
25%
25%
30
1
2
3
4
Countdown
1.
2.
3.
4.
Nondisjunction
during meiosis.
Inheritance of
two recessive
alleles.
Incomplete
dominance.
X-linkage.
25%
25%
25%
25%
30
1
2
3
4
Countdown
1.
2.
3.
4.
AB only
A or B
A, B, or AB
A, B, AB, or O
25%
25%
25%
25%
30
1
2
3
4
Countdown