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.
What are 3 ways that DNA transcription is different from
DNA replication occurs before a cell can divide. During DNA replication, DNA helicase unwinds the double helix. The two strands act as a template for DNA replication, DNA primase then creates a short stretch of nucleotides which are complementary to the template strands. This is known as a primer. DNA polymerase binds to the primer in order to add nucleotides to its 3' end. In the template strand that runs from 5' to 3', it is difficult for DNA polymerase to function. Therefore DNA primase creates primers in various regions complementary to this strand. DNA polymerase adds complementary nucleotides in chunks. DNA ligase then seals the strands together to form the replicated DNA strands.
During RNA synthesis, the DNA strand is unwound with the help of DNA helicase. However, RNA polymerase begins to add nucleotides that are complementary to the template strand. Transcription is required for the synthesis of proteins.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
