Review sheet Chapter 5 Test given to students March 12, 2014
Name _________________________________
“My child has reviewed for science test to be given on Friday, March 14”
__________________________________
(Parent Signature)
1. Assume that one of Squidward’s sons, who is heterozygous for the light blue body color,
married a girl that was also heterozygous. Create a Punnett square to show the possibilities that
would result if they had children.
A. List the possible genotypes and phenotypes for their children.
B. What are the chances of a child with light blue skin? ____%
C. What are the chances of a child with light green skin? ____%
2. For each genotype below, indicate whether it is a heterozygous (He) OR homozygous (Ho).
TT _____
Bb _____
DD _____
Ff _____
Dd _____
ff _____
Tt _____
bb _____
A.Which of the genotypes in #2 would be considered purebred? _________________________
B. Which of the genotypes in #2 would be hybrids? ___________________________________
3. Determine the phenotype for each genotype using the information provided about
SpongeBob.
Yellow body color is dominant to blue.
YY ________________ Yy ________________ yy ________________
Square shape is dominant to round.
SS ________________ Ss ________________ ss ________________
4. Make flashcards for each of the following vocabulary words. Keep using these cards until
you have memorized them! Write a short definition and example of each below:
Heterozygous
homozygous
probability
purebred
hybrid
mutation
genotype
phenotype
meiosis
mitosis
trait
heredity
dominant
recessive
punnett square
5. Show the punnett square that represents Mendel’s first cross pollination of pea plants.
Remember, he crossed a purebred tall pea plant with a purebred short plant. Use gene “G” for
this.
What was the phenotype of the offspring?
Were the offspring purebred? Why or why not?
6. Next, if you remember from the text, Mendel allowed these offspring to self pollinate. Draw a
punnett square to show the result this pollination.
What was the phenotype of the offspring?
What was the genotype of the offspring?
7. One last question about Mendel: Did he only cross pollinate pea plants to research plant
height? What else did he research?
8. Meiosis is a cellular process that results in _______________cells with ___________ the
number of chromosomes than in body cells. Mitosis is a cellular process that results in
_______________________ cells that have the ___________________ number of
chromosomes than the parent cell.
9. Can someone with a recessive trait be heterozygous for that trait? Explain your answer.
10. Not all traits are determined by just one gene. Many traits in humans have a wide variety of
possible phenotypes because they are determined by many different genes. Can you give two
examples of this?
11. Which type of reproduction results in an organism that has half its genetic material from one
parent and half from the other?
12. If gene A is a gene that determines if a Krabb is long clawed (dominant) or short clawed,
what are the possible genotypes and phenotypes for this trait?
13. Illustrate a DNA molecule with one side having bases: CTTGAA. Complete your model
by showing the complementary strand.