a. Do any strands of nucleic acid exist in nature inwhich part of the strand is DNA and part is RNA?If so, describe when such strands of nucleic acidare synthesized. Is the RNA component at the 5′end or at the 3′ end?b. RNA primers in Okazaki fragments are usually veryshort, less than 10 nucleotides and sometimes asshort at 2 nucleotides in length. What does this facttell you about the processivity of the primaseenzyme—that is, the relative ability of the enzymeto continue polymerization as opposed to dissociatingfrom the template and from the molecule beingsynthesized? Which enzyme is likely to have a greaterprocessivity, primase or DNA polymerase III?
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
a. Do any strands of
which part of the strand is DNA and part is RNA?
If so, describe when such strands of nucleic acid
are synthesized. Is the RNA component at the 5′
end or at the 3′ end?
b. RNA primers in Okazaki fragments are usually very
short, less than 10
short at 2 nucleotides in length. What does this fact
tell you about the processivity of the primase
enzyme—that is, the relative ability of the enzyme
to continue
from the template and from the molecule being
synthesized? Which enzyme is likely to have a greater
processivity, primase or DNA polymerase III?
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