If you extract the DNA of the coliphate thetaX174, you will find that its composition is 25 percent A, 33 percent T, 24 percent G, and 18 percent C. Does this make sense in terms of Chargaff's rules? How would you interpret this result? How might such a phage replicate its DNA?
Ideas are expressed.
Describe the structure and function of DNA as the molecule of inheritance.
I need a better understanding of the below:
a. Describe the structure of DNA.
b. Discuss how the structure of DNA allows it to serve as the basis for inheritance.
c. Examine how meiosis allows DNA to be divided into gametes.
d. Describe how
There are a number of natural types of DNA. One is animal DNA, one plant DNA, another bacterial DNA. There are two types of DNA (one in plants and one in animal cells) that are part of cells but are not the main blueprint (not found in the nucleus) for the cell. What are these two types of DNA? Ideas are expressed.
The final product of DNA replication is:
a. mRNA, tRNA, and rRNA molecules
b. a wide variety of proteins
c. DNA fragments
d. two DNA molecules , each of which contains one new and one old DNA strand
e. the enzymes needed for further processes, such as DNA polymerase.
Why does DNA synthesis only proceed in the 5' to 3' direction?
a. because DNA polymerases can only add nucleotides to the 3' end of a polynucleotide strand
b. because the 3' end of the polynucleotide molecules is more electronegative than the 5' end.
c. becuase that is the direction in which the two strands of DNA unzip
Two strands of DNA molecule are radio-labeled, each strand can be uniquely identified. After three rounds of replication, how many new molecules of DNA are formed? How many DNA strands are radio-labeled? Are both radio-labeled strands in the same DNA molecule?
DNA and RNA are similar yet distinct components of the cell. Describe three differences between RNA and DNA with respect to their chemical composition and structure. Provide a detailed description of each characteristic.
Which of the following best describes semiconservative replication?
a. the translation of a DNA molecule into a complementary strand of RNA
b. a DNA molecule consists of one parental strand and one new strand
c. the number of DNA molecules is doulbed with every other replication
d. the replication of DNA never takes pl