Question

During the G2 phase of the cell cycle, the cell carries out a specific function for the organism: for example a muscle cell contracting during exercise chromosome material has already been copied DNA synthesis is occurring daughter chromosomes are distributed into daughter nuclei and cytokinesis occurs.

Answer 1

chromosome material has already been copied

Explanation:

The interphase is the previous step before mitosis occurs. The interphase is conformed of the G1, S, and G2 stages.

• During the S stage occurs the DNI replication process. At this point, also occurs the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.

• During the G2 phase of mitosis, sister chromatids are held together until they reach the Anaphase, during which other enzymes are activated to break the bonds and separate the chromatids.

• During the G2 phase of meiosis, sister chromatids and homologous chromosomes are held together by the cohesin proteins. Homologous chromosomes must be together until crossing over is completed, and cohesin proteins play an important role in making it possible. After the firsts stages of meiosis, sister Chromatids get completely separated in Anaphase II. During this phase it occurs the same as in mitosis, bonds break and chromatids get separated and go forward to each cellular pole.

• G2 stage is the final one before the cellular division. Here begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.