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Punnett Squares
Word Problems
Vocabulary
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Blood Types
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 gene that shows up anytime it is present

What is dominant.

100
Hh, Zz, Xx. Each of these are _______________.
What is heterozygous.
100

A man with type AB blood marries a woman who is type AO.  What blood types can they expect of their children?

What is Type A, Type AB, and Type B?

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

Give the two methods for writing Type A blood and tell which is homozygous and which is heterozygous

Homozygous IAIA

Heterzygous IAi

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

A man who is homozygous for Type B marries a woman with type O blood.  Show the punnett square to predict the blood types of their offspring

All IBi

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

Show the punnett squares for a woman who is Type A crossed with a man who is Type BO.  

Must show two punnett squares or you aren't correct
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

A woman is type A and has a baby who is type O.  Her husband is type B.  How is this possible

Both parents must be heterozygous.