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DNA Structure, Replication, and Technology

DNA Structure, Replication, and Technology

DNA Structure, Replication, and Technology: Let's Mutate True or False

1.

Based on the previous Punnett Square with dominant allele "A" and recessive allele "a," which of the following would BEST describe the two parents?

-> Both parents are homozygous.

A

a

a

Aa

aa

a

Aa

aa

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

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