Punnett Squares
Story Problems
Punnett Square Terms
Q's from Test
Vocabulary
100

Complete a punnet square for TT and tt. What are the 4 offspring genotypes?

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

Freckles are this type of trait. (inherited or acquired)

What is inherited

100

A genetic change in a gene or chromosome that can be good or bad. Example: Down syndrome

What is Mutation

200

Complete a Punnett square for Gg and Gg. What are the 4 offspring genotypes?

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

A dog barking to go outside is this type of trait. (Inherited or Acquired)

What is acquired.

200
Capital letters are always represented by the _____________ allele, not the recessive allele.
What is dominant.
300

Complete a Punnett square for someone who is heterozygous for tall and for someone who is homozygous for short. (Use the letter T & t)

What are the 4 genotypes for offspring?

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

XX chromosomes creates this gender.

What is female

300
A _______________ trait is a trait that is expressed or shown.
What is dominant.
400

If the offspring genotypes are GG, Gg, Gg, gg..

What were the genotypes of the parents?

Mom = Gg and Dad = 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

Where are chromosome located in the cell?

The nucleus.

400
A ______________ trait is a trait that is hidden by the dominant gene.
What is recessive.
500

The four offspring 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

He is the father of Genetics

Who is Gregor Mendel. (Mendel is an acceptable answer)

500

A change in structure, function, or behavior by which a species or individual improves its chance of survival in a specific environment.

What is adaptation

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