Assume that a cell has 6 chromosomes while it is in the g1 stage of the cell cycle. how many chromosomes and how many dna molecules will it have in the g2 stage?

6 chromosomes and 12 DNA molecules

Explanation:

The stages G1 and G2 are stages present in the phase called Interphase, which is one of the phases of cell division.

The cells that present in G1 go through periods of growth, differentiation and production of substances such as proteins. After G1, there is the S stage, where the cell, even performing its metabolic functions, begins the process of duplication of its genetic material, DNA. At the end of this step, the cell will have all its duplicate DNA and then move on to the next phase, G2.

The G2 stage is characterized by the production of substances that will contribute to the formation of the two new cells that will be formed, so all organelles must be duplicated. At the end of period G2, the cell moves to the division step. In case of division for formation of somatic (non-reproductive) cells will occur the process of mitosis, but in case of formation of germ cells (reproductive - sperm or egg) we will have the meiosis process.

Accordingly, we can see that if a cell starts the G1 stage with 6 chromosomes, after all the organelles expansion and multiplication process, that cell will arrive at the G2 stage with 6 chromosomes and 12 DNA molecules.