Thanks for reaching out! Four days in the Cinque Terre sound wonderful. From Venice, youâre going to want to take the fast train to Florence, then switch to a train to La Spezia. The route takes 5 hours, and you can see the various options by putting in âVeneziaâ to begin and âLa Speziaâ to end on trenitalia.it.
The cell cycle is controlled by the products of two classes of genes, proto-oncogenes and tumor suppressor genes. Normally the expression of these genes is balanced. 1. Proto-oncogenes encode proteins that promote cell division (These proteins act like the gas pedal on a car.. Cyclins: a family of proteins that regulate the timing of the cell cycle. These proteins trigger cell division. Internal regulators: several proteins make sure the cell cycle does not proceed unless certain processes have happened inside the cell.
Cell division consists of two phasesâ nuclear division followed by cytokinesis. Nuclear division divides the genetic material in the nucleus, while cytokinesis divides the cytoplasm. There are two kinds of nuclear divisionâmitosis and meiosis.