Name:
Period:
Date:
Genetics Test Review
I. Homozygous versus Heterozygous
For each genotype listed below, indicate whether it is Heterozygous (Het) or Homozygous (Hom)
(12 points)
_____
AA
Ee _______
Ii _______
_____
Bb
ff
_______
Jj _______
_____
Cc
Gg _______
kk _______
_____
DD
HH _______
LL _______
II. Genotypes and Phenotypes
For each of the genotypes below, determine what phenotypes would be possible. (6 points)
1. Purple flowers (P) are dominant to white flowers (p).
PP _____________________________
Pp _____________________________
pp _____________________________
2. Blue eyes (b) are recessive to brown eyes (B).
BB ____________________________
Bb ____________________________
bb ____________________________
III. Multiple Choice
Write the letter of the best answer to the question on the line provided (8 points)
_____
1. Who is known as the Father of Genetics?
A. Hooke
B. Mendel
C. Pasteur
D. Gene
_____
2. How many chromosomes in total do you as a human have?
A. 23
B. 34
C. 68
D. 46
_____
3. Where are chromosomes found in the cell?
A. Nucleus
B. Cell membrane
C. DNA
_____
4. What organelle (part of the cell) makes proteins?
A. Nucleus
B. Ribosomes
C. Cell membrane
_____
5. What is the single stranded Nucleic Acid called?
A. DNA
B. RNA
C. Ribosome
_____
_____
6.
8. Each member of a gene pair that determines a specific trait is referred to as ___?
A. Homozygous
B. Heterozygous
C. Heredity
D. Allele
IV. Punnet Squares
1. The table below shows the possible allele combinations for each blood type. (10 points)
BLOOD GROUPS
COMBINATION OF ALLELES
A
AA or AO
B
AB
O
BB or BO
AB
OO
What will the genotypes and phenotypes be for the offspring if a mother has a blood type of AO and the
father has a blood type of BO. Draw a punnet square to show the genotypes and then answer the questions
to determine the phenotypes.
a.
b.
c.
d.
What percentage of the offspring will have type A blood?
What percentage of the offspring will have type B blood?
What percentage of the offspring will have type AB blood?
What percentage of the offspring will have type O blood?
_________
_________
_________
_________
2.
Part A:
A homozygous red flower (RR) is pollinated with a homozygous white flower (WW). Show what the
offspring might look like using a punnet square and using the understanding that R is not dominant over W
and W is not dominant over R. (8 points)


How many of these offspring are heterozygous? __________
How many of these offspring are homozygous? ___________
Part B:
Now, using two of the offspring in the above punnet square, determine what the possible genotypes of these
offspring might be by drawing a punnet square and then answer the questions. (10 points)
a.
How many of these offspring are heterozygous? ______________________________
b.
How many of these offspring are homozygous? __________________
c.
What is the term for genes that show neither dominant nor recessive traits?
__________________________
d.
What is the phenotype of the offspring in this problem? _________________
These are the cell parts we have learned so far. Fill in the function of each cell part below.
Golgi Body
Nuclear
membrane
Ribosome
xxxxx
xxxxx
ER
Chromosomes
inside the nucleus
Cell membrane
ER: ____________________________________________________________________
Golgi Bodies: ____________________________________________________________
Ribosome: ______________________________________________________________
Cell Membrane: _________________________________________________________
Nuclear Membrane: ______________________________________________________
Nucleus: ________________________________________________________________
Chromosomes: __________________________________________________________
Explain how a protein is made: Include the organelles listed above in your description. If
you would rather draw and label pictures you may as well.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
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