Itâs extremely unlikely that youâre ever going to become rich doing photography. In fact, if this is your only income and you have a family, itâs a hard income to live off of and youâre going to have to make sacrifices. That doesnât mean you canât do it or that itâs not worth it.
1 During initiation, proteins bind to the origin of replication while helicase unwinds the DNA helix and two replication forks are formed at the origin of replication.  During elongation, a primer sequence is added with complementary RNA nucleotides, which are then replaced by DNA nucleotides.
The problem of how DNA replication occurs only once in each cell cycle has been partially resolved by studies in the fission yeast, Schizosaccharomyces pombe, where genetic approaches have been used to study the sequential coupling of the S and M phases. As will be discussed, Cdk are implicated as central regulators.