1. GENETICS with Name ___________________
Trait Dominant Gene Recessive Gene
Flight Can’t fly (F) Can fly (f)
Strength Super Strength (M) Normal (m)
Speed Normal (Q) Superspeed (q)
Invisibility Visible (I) Invisible (i)
Skin Stretchy (R) Normal (r)
Review of the movie:
Bob: can’t fly, has superstrength, normal speed, visible, and normal skin
Helen: can’t fly, has normal strength, normal speed, visible and stretchy skin
What is the chance that Bob, who is heterozygous for flight, and Helen, who is also heterozygous
for stretchy skin and for flight, would have a child that can fly and have stretchy skin?
1. ______________
2. Bob’s genotype_____________ x Helen’s genotype _____________
3.
If Dash, who is heterozygous for flight, but has superspeed, wants to make sure his children have
superspeed, what must his future wife’s genotype be for the gene for speed?
4. ________________
If Dash marries a superhero who can fly 6. Dash’s genotype______ x Wife’s genotype _______
and is superfast, what is his wife’s 7.
genotype?
5. ________________
What would be the probability of a child who
can fly superfast?
8. ________________
What is the probability of a normal child (not fast, and can’t fly)?
9. ______________

2. How many of their children will have ANY
superpower?
10. ________________
Violet, whose only superpower is to turn invisible, has fallen in love with an average Joe. Is it
possible for them to have children with any superpowers? Special notes: both Violet and Joe are
CARRIERS of the genes for flight and superspeed. You may also want to review the genotype table
again carefully.
11. _______________________ % of a child with superpowers
Bob and Helen are expecting their fourth child. They currently have 2 boys and 1 girl, what is the
probability of this child being another boy?
11. __________________%
They’re hoping this child will express both of their superpowers.
What is the genotype of a child who is superstrong and stretchy?
13. ____________________
BONUS:
Mathematically, instead of doing complicated Punnett squares, you can multiply all your
probabilities together to find the odds of multiple situations happening at once. For example, the
odds of rolling a six are 1/6, the odds of rolling two sixes with two dice at the same time are 1/36
(1/6 x 1/6). So, what are the odds of a male child, who is superstrong, stretch, invisible and
superfast?