DNA Structure, Replication, and Technology True or False
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1.
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.
True
False
2.
What percent of the offspring are homozygous? -> 50%
True
False
3.
What percent of the offspring would be heterozygous? -> 50%
True
False
4.
What percent of offspring will display the recessive phenotype? -> 100%
True
False
5.
After meiosis is completed, what is the ploidy, or number of copies of genome, in a cell? -> n
True
False
6.
Which of the following organisms will have the lowest mutation rate of its genome? -> Influenza virus (RNA virus)
True
False
7.
Which of the following nucleotide pairs require the most energy to separate? -> A-C
True
False
8.
Which of the following enzymes is required first for DNA replication? -> Helicase
True
False
9.
Which of the following does NOT describe lagging strand synthesis? -> The DNA polymerase works more slowly than on the leading strand.
True
False
10.
Which of the following is true of telomeres? -> They are modified by enzymes called telomerases.
True
False
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