Final answer:
A fungus cell with initially 12 chromosomes will have 24 after interphase due to DNA replication, and each daughter cell will have 12 chromosomes after mitosis since the chromosomes are equally divided.
Step-by-step explanation:
If a fungus cell originally has 12 chromosomes, it will have 24 chromosomes after interphase and 12 chromosomes in each daughter cell after mitosis. During interphase, the cell grows and the nuclear DNA is duplicated. Therefore, each chromosome will be copied, leading to a total of 24 chromosomes.
Afterwards, during the mitotic phase, these duplicated chromosomes are segregated and evenly distributed into the two forming daughter nuclei. When the cell completes mitosis and subsequently goes through cytokinesis, the cytoplasm divides resulting in two genetically identical daughter cells, each with 12 chromosomes—the original number the mother cell had before DNA replication.