If a dog has 72 chromosomes, each daughter cell in the dog will have 72 or 36 chromosomes depending on if the daughter cells are produced by mitosis or by meiosis respectively.
Daughter cells are produced by cell divisions and cells can divide either by mitosis or meiosis.
Mitosis results in equational division. That is, the daughter cells look exactly like the parent cell both phenotypically and genotypically.
Meiosis, on the other hand, results in reductional division. That is, the daughter cells do not look like the parent be it phenotypically or genotypically. The daughter cells in meiosis usually possess half of the chromosome number found in their parents. Thus, the name reductional division.
Hence, a cell with 72 chromosomes that divide by mitosis will produce daughter cells with 72 chromosomes each while each daughter cell will have 36 chromosomes each if it were to be by meiosis.
More on mitosis and meiosis can be found here: https://brainly.com/question/3210423
