Name ______________________________________
Date ________________
Quiz Dihybrid Punnet Squares and Chpt 10
Fill in the blanks with the correct answer.
1. DNA is a polymer made up of repeating subunits called _____________________________.
2. Which two scientists are credited with the model for the structure of DNA
________________________________________________.
3. They suggested that the structure of DNA is in the shape of a _____________________________.
4. The backbone of the DNA molecule is formed by the ____________________ and ___________________.
5. One full turn of the DNA molecule consists of ______________ base pairs.
6. A nucleotide is made up of:
a. _______________________
b. _______________________
c. _______________________
7. The codon is located in the __________________and the anticodon is found in the ___________________ .
8. The genetic code is based on reading __________ bases at a time.
9. The enzyme responsible for “unzipping” the DNA molecule is _________________, and results in the formation
of a ____________________________.
10. During replication, once the 2 strands of DNA are separated, they are each called:
a. _______________________ (5’-3’)
b. _______________________ (3’-5’)
11. The enzyme ___________________ will start the process of replication by creating a small piece of RNA called
a ____________________.
12. DNA polymerase can only add bases in which direction? __________________.
13. The process by which genetic information is copied from DNA to RNA is called _______________________.
14. In Replication, once the new DNA has been made the enzyme ____________________ removes the RNA
primer from both DNA strands, and the enzyme _____________________ seals the fragments.
15. The nitrogen bases can be of two types for both DNA and RNA:
a. ______________________.
b. ______________________
16. The base-pairing rule for DNA is __________________with____________________; and
__________________with_____________________.
17. The base-pairing for RNA is __________________with____________________; and
__________________with_____________________.
18. The lagging strand adds DNA bases in small chunks called __________________________.
True or False. If the answer is False, change the underlined word(s) to make the statement true.
_______ 1)The sugar found in RNA is called deoxyribose.________________________
_______ 2)The DNA molecule is double stranded and the RNA molecule is single stranded. ___________
_______ 3)The process of translation occurs at the ribosome.________________________
_______ 4) The sequence of amino acids determines how the DNA will twist and fold into the 3-D structure.
________________________________________.
_______ 5)The job of mRNA is to pick up amino acids and transport them to the ribosomes. ___________
_______ 6)Transcription must occur before translation may occur.________________________
Instructions: complete a dihybrid cross and calculate the ratios of each genotype.
1) A tall green pea plant (TtGg) is crossed with a short white pea plant (ttgg).
___________ X ___________
____ Tall/Green : ____ Tall/white : ____ short/Green : ____ short/ white
2) Write the genotype of both parents using the letters in question 1, if a homozygous tall,
heterozygous green plant is crossed with a homozygous short white plant.
___________ X ___________
3) In the figure below, a, b and c are types of ___________________. Label each with the correct
name.