The G1 phase is often referred to as the growth phase, because this is the time in which a cell grows. During this phase, the cell synthesizes various enzymes and nutrients that are needed later on for DNA replication and cell division. ... The G1 phase is also when cells produce the most proteins.
The G1 phase of the cell cycle in which there is cell growth with the synthesis of proteins and RNA. During this phase the cell only has a single copy of DNA. This phase lasts between 6 and 12 hours and the cell doubles its size and its mass by the synthesis of its components, expressing itself as a result in the expression of its genes, which encode the necessary proteins of its phenotype.
