Think you’ve got your head wrapped around DNA Structure, Replication, and Technology? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Based on the Punnett Square below, with dominant allele "A" and
recessive allele "a," which of the following would BEST
describe the two parents?
A | a | |
|---|---|---|
a | Aa | aa |
a | Aa | aa |
Both parents are homozygous.
Both parents are heterozygous.
Both parents have the recessive allele.
Both parents have the dominant allele.
Both parents are male.
Q. What percent of the offspring are homozygous?
10%
25%
50%
75%
100%
Q. What percent of the offspring would be heterozygous?
10%
25%
50%
75%
100%
Q. What percent of offspring will display the recessive phenotype?
10%
25%
50%
75%
100%
Q. After meiosis is completed, what is the ploidy, or number of copies of genome, in a cell?
n
2n
4n
8n
n2
Q. Which of the following organisms will have the lowest mutation rate of its genome?
Influenza virus (RNA virus)
HIV (a retrovirus)
Herpes simplex 1 (DNA virus)
E. coli
A redwood tree
Q. Which of the following nucleotide pairs require the most energy to separate?
A-T
A-C
A-G
G-C
G-T
Q. Which of the following enzymes is required first for DNA replication?
NcoI
Helicase
DNA polymerase
RNA polymerase
Telomerase
Q. Which of the following does NOT describe lagging strand synthesis?
It requires multiple RNA primers to start replication.
It requires multiple DNA polymerases.
The DNA polymerase works more slowly than on the leading strand.
It forms Okazaki fragments.
It forms after helicase activity.
Q. Which of the following is true of telomeres?
They are single-stranded pieces of DNA.
They have a fixed length.
They are modified by enzymes called telomerases.
They are long stretches of single nucleotides.
They are only found in circular DNA.