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Whoville Genetics Name ___________________________
Whoville scientists been investigating the genetic makeup of the organisms in
this community.
Use the information provided and your knowledge of genetics to answer each
question.
1. For each genotype below, indicate whether it is a heterozygous (He) OR
homozygous (Ho).
TT _____ Bb _____ DD _____ Ff _____ tt _____ dd _____
Dd _____ ff _____ Tt _____ bb _____ BB _____ FF _____
2. Which of the genotypes in #1 would be considered purebred?
_______________________________
Which of the genotypes in #1 would be hybrids?
__________________________________________
3. Determine the phenotype for each genotype using the information provided
about the Whos.
Small nose is dominant to long nose.
LL _________________ Ll _________________ ll _________________
Four fingers on the hand is dominant to three.
FF _________________ Ff _________________ ff _________________
4. For each phenotype, give the genotypes that are possible for the Whos.
Long legs (N) is dominant to short legs (n)
Long = ________________________ Short = __________________________
Pink body color (B) is dominant to blue body color (b)
Pink body = ___________________Blue body = ________________________
5. Cindy Lou and Stevie Yu recently got married and decided to have children.
Cindy is heterozygous for her pink body color while Stevie is homozygous blue.
Create a Punnett square to show the possibilities that would
result if Cindy Lou and Stevie Yu had children. HINT: Read question #3 to
determine genotypes!
A. List the possible genotypes and phenotypes
for their children.
B. What are the chances of a child with a
pink body? ____ out of ____ or ____%
C. What are the chances of a child with a
blue body? ____ out of ____ or ____%
6. Leggy Lindy Lin met Stubby Sal Val at the Whoville Society Dance. Both of
them are homozygous for their leg length. Create a Punnett square to show the
possibilities that would result if they had children. HINT: Read question #3!
A. List the possible genotypes and phenotypes for their children.
B. What are the chances of a child with
long legs? ____ out of ____ or ____%
C. What are the chances of a child with
short legs? ____ out of ____ or ____%
7. Ootie Ota Ono and Odie Otis decided that they want to have children with
small noses. Both Oootie Ota and Odie Otis have long noses. What would their
geneotypes have to be for their children to be born with short noses?
Fill in the Punnet square to prove you are right!
7. In Whoville, having three fingers is highly valued by the Who’s. Those Who’s
who have three finger can knit beautiful Whovia Woolmeana Sweaters! Martha
May Whovia has three fingers and wants to marry a man who can give her three
fingered children. What kind of genotypes can she marry to give her children with
three fingers?
Create Punnet Squares to show your work.
8. Who’s can have hair of any color. Gawdy Gary Gonzo has purple hair. He
marries a female who also has purple hair. Their children are born with blue, red,
and purple hair! Is this possible?
What would the genotypes and Gary and his wife be?
Create a Punnett Square to show the possible genotypes of the children.
9. A small nosed Who (homozygous) marries a Long nose who. They have 8
children. How many of the children will have small noses?
10. Orville Oopmah Who has long legs and is married to Opal Oval Who. Opal
also has long legs and brags that her bloodline is “pure”. One of their children is
born with short legs. Is Orville the father? Opal swears she has been faithful and
claims the hospital must have goofed! Is this a possible explaination? SHOW A
SQUARE TO PROVE YOUR ANSWER!