CBC VALUES. Blood work is a very important diagnostic tool that provides a significant amount of information about your petâs health. A complete blood count (CBC) is a blood test used to measure and evaluate cells that circulate in the blood.
G1 phase. Interphase begins with G1 (G stands for gap) phase. During this phase, the cell makes a variety of proteins that are needed for DNA replication. S phase. During S phase, which follows G1 phase, all of the chromosomes are replicated.
Previous to replication, a germ cell contains two copies of each chromosome, a maternal copy, and a paternal copy. The maternal and paternal homologues represent the maternal and paternal genetic contributions to each cell and ensure that each cell has a 50% genetic make-up coming from each parent. These two chromosomes are independent but very similar, and are termed homologues of each other. DNA replication occurs in the same fashion as it does during mitosis. After replication, the homologues are doubled, and each chromosome now has a homologous pair.