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Alien Genes Project
Version 3
Today you will find out what your alien looks like, based on it’s parents’ genetics. In
order to figure out the exact genotype and phenotype, you will complete a set of
Punnett squares that show what your alien looks like. There are several categories,
and not all aliens will have the same traits. Describe the parents genotyoes and the
alleles before you set up your Punnett squares. You must Draw your alien. Have fun.
You will always select the genotype of your alien (Phenotype is in bold) found in the
following square of your Punnett square:
1
2
Circle the selected square.
3
4
In your alien species:
Both parents are Heterozygous for this trait. Red is Dominant, Orange is
Incomplete Dominant and Black is Recessive.
Mother
Father
Color =
One parent is Homozygous Recessive and one parent is Homozygous Dominant.
Forked toungue is Dominant to not forked.
Mother
Father
Forked toungue = Yes / No
One parent is Homozygous Recessive, the other parent is Heterozygous.
Tail is Recessive.
Mother
Father
Tail = Yes / No
One parent is Heterozygous, one is Homozygous Recessive.
No backbone is Recessive.
Mother
Father
Backbone = Yes / No
Both parents are Heterozygous. Four eyes is Dominant, Three eyes is Incomplete
Dominant and Two eyes is recessive.
Mother
Father
Number Eyes =
TURN OVER- continued on other side
Alien Genes continued
Both parents are Heterozygous for this trait.Female is Dominant, Both is
Incomplete Dominant and Male is Recessive. (Indicate by hat or clothing color – no
external features. Pink is female, Pink and Blue is both, Blue is male).
Mother
Father
Gender =
Color(s) =
One parent is Heterozygous, the other Homozygous Dominant.
Sharp teeth are Recessive.
Mother
Father
Sharp teeth = Yes / No
One parent is Homozygous Recessive, the other is Heterozygous.
Wings are Dominant to no wings.
Mother
Father
Wings = Yes / No
One parents is Homozygous Dominant, the other is Homozygous Recessive. Five arms
is Dominant, Three arms is Incomplete Dominant and Six arms is Recessive.
Mother
Father
Number Arms =
Both parents are Homozygous Recessive. Fur is Recessive.
Mother
Father
Fur = Yes / No
Both parents are Homozygous Dominant. No fingernails is Recessive.
Mother
Father
Fingernails = Yes / No
Objectives: Students will be able to determine alleles of gametes and construct a
punnit square. They will use the genotype to determine the phenotype of the alien.
Genetics: 2 Mutation and sexual reproduction cause genetic differences in a population.
G2g: how to predict alleles based on the parents genetics.
G3a: how to predict phenotypes in a cross from parental genes, and the type of
inheritance (dominant or recessive).