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.
Refer to the figure to answer these questions:
a. Add labels for mRNA (including the 5′ and 3′ ends) and tRNA. In
addition, draw in the RNA polymerase enzyme and the ribosomes,
including arrows indicating the direction of movement for each.
b. What are the next three amino acids to be added to polypeptide b?
c. Fill in the
template DNA strand.
d. What is the sequence of the DNA complementary to the template
strand (as much as can be determined from the figure)?
e. Does this figure show the entire polypeptide that this gene
encodes? How can you tell?
f. What might happen to polypeptide b after its release from the
ribosome?
g. Does this figure depict a prokaryotic or a eukaryotic cell? How can
you tell?
Step by step
Solved in 2 steps with 1 images
