Punnett Squares (2)
Cross a heterozygous banded king snake with a
Purebred banded snake.
What  are the chances of the offspring being  banded?
It is a dominant trait in California King Snakes to
have a banded pattern on their skin and a recessive
trait to have stripes.
0%
25%
50%
100%
what percentage chance is their that the offspring will
have floppy ears
Cross a  hybrid  upright ear with a  floppy ear
In rabbits it is dominant to have upright ears and
recessive to have floppy ears.
0%
50%
75%
100%
Green spots are dominant in tree frogs while yellow
spots are recessive.
Cross two hybrid green spotted frogs
What are the chances that  the offspring  will have
green spots?
0%
50%
75%
100%
White tipped tails are a dominant trait among fox.
Some fox that inherit the recessive trait have a tail
that does not have a white tip.
Cross a  homozygous white tip  fox with a 
heterozygous white tip fox.
What are the chances of their offspring inheriting
the white tip tail trait?
0%
50%
75%
100%
What are the chances that the offspring will have short
whiskers?
0%
In seals, long whiskers are the dominant trait and
short whiskers are the recessive trait.

Cross a hybrid long whisker with a purebred
long whisker.
50%
75%
100%
In our critter experiment blue tails(T) are dominant
over orange tails(t).  If I found a blue tail critter  and I
want to know if he is purebred or hybrid, which female
should I breed him with to find out.
TT
Tt
tt
Most purple people eaters have only one horn, however
a recessive gene can cause them to have no horns.

Cross  a purebred one horn with a hybrid one horn.
What are the chances that their offspring will be born
without a horn?
0%
50%
75%
100
In African Cichlid fish, stripes are dominant over solid
body colors.
Cross a solid blue fish with a heterozygous blue fish
What are the chances their babies will have stripes?
0%
25%
50%
75%
100%
In our critter  experiment blue tails(T) were dominant
over orange tails(t).  If 100 babies are born and 50%
have orange tails, which pairing most likely represents
their parents genotypes?
Homozygous Dominant  x  Heterozygous
Purebred Dominant x Purebred Recessive
Heterozygous x Purebred Recessive
Heterozygous x Hybrid
Marge and Homer Simpson are considering having
another child.  They know that blue hair is a recessive
trait that shows up later in life.  Marge of course is a
blue hair and Homer is a heterozygous normal hair.
0%
What are the chances that their next child
will have blue hair when they grow up?
25%
50%
75%
100%
Flying monkeys are known for  the dominant trait  of
having wings.  Monkeys that receive the recessive
trait have no wings.
If  you cross a heterozygous flying monkey and
a homozygous monkey with no wings.  What
are the chances of their offspring having wings?
0%
25%
50%
75%
100%
The gene that makes people Green Bay packer fans
is dominant over the gene that makes you a 49er
fan.  Cross a homozygous packer man with a 49er
cheerleader (purebred fan)
What are the chances that the children will be
awesome Green Bay Packer Fans?
0%
25%
50%
75%
100%
Cross a purebred laser unicorn and a homozygous mind
control unicorn.
What percent of their offspring will be  able to control
minds?
Robot Unicorn Zombies can do two things with their
horns; shoot lasers or control minds.  Shooting
lasers is dominant over mind control
0%
25%
50%
75%
100%
The dominant trait in turtles is for green coloring. 
Sometimes the turtles inherit the recessive trait that
causes them to be Albino (white)
What are the chances their babies will be Albinos?
Cross a homozygous green turtle with an
albino.
0%
25%
50%
75%
100%
In the world of superheroes it is a dominant trait to
be able to fly.  If we cross Superman (a hybrid flyer)
with wonder woman (a non-flyer)
What are the chances of their children being able
to fly?
0%
25%
50%
75%
100%
It is a dominant trait in Dragons to be able to breathe
fire.  Dragons that inherit the recessive trait, can only
breathe smoke. 
Cross two hybrid fire breathers and tell me
what are the chances that their children can
breath fire?
0%
25%
50%
75%
100%
Long tails are dominant over short tails in  cats.
If Tom (a hybrid long tail) breeds with
Ginger (a short tail cat).  What are the chances that their
offspring will have short tails?
0%
25%
50%
75%
100%
What percentage of their offspring will have an odd
number of spots.
It is a dominant trait for ladybugs to have an even
number of spots.  It is a recessive trait to have an
odd number of spots. 
0%
Cross a purebred 4 spot ladybug with a
 homozygous 3 spot ladybug
25%
50%
75%
100%
At the north pole, the elves are known for their pointy
ears.(E)  Some of them however have rounded ears(e)
whichis a recessive trait.  Two pointed ear elves have
four children.  Three of the children have pointed ears
and one of the children has rounded ears.  What
are the most likely genotypes of their parents?
Tt x Tt
TT x TT
tt x Tt
tt x tt
Northwestern Barn Owls feed mostly on mice.  Brown
is the Dominant color for the mice they eat; White is
the recessive color.  If a recent cold spell blanketed
the ground with snow for several months, what
 would you predict might happen to the mouse gene
pool?
the brown allele would become more common
the white allele would become more common
the white allele would  disappear
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