What likely determines the phenotype of a given cell? —
Which genes are expressed in that particular cell

How often that cell undergoes mitosis

How often a cell is used for a given biological function

No answer text provided.

Which genes are expressed in that particular cell

Explanation:

Not all genes are expressed at the same time. Distinct gene expression patterns define the identity of each cell.

For example, the genes involved in the function of muscle tissues are only expressed in muscle cells, not in skin cells (and vice versa).

Therefore, the phenotype of the cell is largely determined by the activity of genes in the cell

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.