Final answer:
The number of chromosomes in a G1 cell is the same as in the metaphase of mitosis.
Step-by-step explanation:
In the metaphase of mitosis, a cell contains 48 sister chromatids. Each sister chromatid is a copy of a chromosome. Therefore, a cell at metaphase of mitosis contains 24 chromosomes since each chromosome has two sister chromatids.
A G1 (Gap 1) cell refers to the first phase of interphase that occurs before DNA synthesis. During the G1 phase, the cell has a normal complement of chromosomes. So, a G1 cell will have 24 chromosomes, the same number as in the metaphase of mitosis.