Punnett Squares
Word Problems
Vocabulary
Random
SpongeBob Fun
100
Complete a punnet square for TT and tt.
What is Tt, Tt, Tt, Tt
100
Jimmy has a big nose. His genotype is GG. Sally also has a big nose. Her genotype is Gg. What are the possibilities for their children's genotypes?
What is GG, GG, Gg, Gg
100
___________ is the passing down of traits from one generation to the next.
What is Heredity.
100
Hh, Zz, Xx. Each of these are _______________.
What is heterozygous.
100

SpongeBob SquarePants recently met SpongeSusie Roundpants at a dance.  Square shape (S) is dominant to round shape (s).  SpongeBob is heterozygous for his square shape.  This is SpongeBob's genotype.

What is Ss?

200
Complete a Punnett square for Gg and Gg.
What is GG, Gg, Gg, gg
200
Jared is homozygous for brown hair. His wife is homozygous for blonde hair. Brown hair is dominant to blonde hair. What are the possible genotypes for their children?
What is Bb, Bb, Bb, Bb.
200
A pair of alleles that are the same are called __________________.
What is homozygous.
200
HH, TT, zz. Each of these are ______________________.
What is homozygous.
200

Blue skin (B) is dominant over green skin (b).  Squidward's nephew has green skin.  This is his genotype.

What is bb?

300
Complete a Punnett square someone who is heterozygous for tall and for someone who is homozygous for short.
What is Tt, Tt, tt, tt
300
Mike is heterozygous for brown eyes. His wife has blue eyes. What percentage of their children will most likely have brown eyes? What percentage will most likely have blue eyes?
What is 50% brown and 50% blue eyes?
300
A pair of alleles that are different are called ____________________.
What is heterozygous.
300
Jim and Jane are both heterozygous for being tall. What are the chances that they will have a short child?
What is 25% chance.
300

Yellow body color (Y) is dominant to blue (y).  This is the phenotype of a yy sponge.

What is blue?

400
Complete a Punnett square for someone who is Homozygous for green eyes and someone who has blue eyes. Green is dominant over blue.
What is Gg, Gg, Gg, Gg.
400
Tim and Jenny both have dark skin, but each of them carry a recessive trait for light skin. What are the chances that their children will have dark skin? Light skin?
What is 75% dark skin and 25% light skin.
400
___________________ describes a pair of alleles and is represented by letters such as Tt or TT.
What is genotype.
400
GG, Gg, Gg, gg. Green eyes are dominant to blue eyes. What percent have green eyes? What percent have blue eyes?
What is 75% and 25%.
400

In Patrick's species, pink body color (P) is dominant to yellow (p).  These are the possible genotypes of a pink starfish.

What are PP and Pp?  (must include both to get the points)

500
The four answers for a Punnett square are Zz, Zz, zz, zz. What are the genotypes for the parents?
What is Zz and zz.
500
James is homozygous for big lips. His wife also has big lips, but one of their children has small lips. What is his wife's genotype?
What is Bb.
500
__________________ is simply the expression of the genotype. It is how the trait is expressed (ie. dark hair, tall, big lips, etc.)
What is phenotype.
500
Write a word problem that will have the following results: The children have a 50% chance of having straight teeth and a 50% chance of having crooked teeth.
What is....
500

In Patrick's species, pink body color (P) is dominant to yellow (p).  This is the genotype of a yellow starfish.

What is pp?

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