a. Very few if any eukaryotic genes contain tractswith more than 25 As or Ts in a row, yet almost alleukaryotic mRNAs have a tract with more than100 As in a row. How is this possible?b. Scientists know the nucleotide sequences that directthe termination of bacterial gene transcription, butthey generally have little idea about the nature ofthe nucleotide sequences that direct transcriptiontermination in eukaryotic cells. Explain the basisof this statement.
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. Very few if any eukaryotic genes contain tracts
with more than 25 As or Ts in a row, yet almost all
eukaryotic mRNAs have a tract with more than
100 As in a row. How is this possible?
b. Scientists know the
the termination of bacterial gene transcription, but
they generally have little idea about the nature of
the nucleotide sequences that direct transcription
termination in eukaryotic cells. Explain the basis
of this statement.
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