which genes are present how many copies of each gene are present which genes are active what protein is produced by a gene
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What characteristic of DNA results in cell differentiation in developing embryos?
Possibilities:
- which genes are present
- how many copies of each gene are present
- which genes are active
- what protein is produced by a gene

which genes are active