There's a lot to unpack here, let's do it together. Firstly, "pg" is an abbreviation for picogram. It is a unit of measurement used to quantify very small amounts of mass. One picogram is equal to one trillionth of a gram (10^-12 grams).
In the context of your question, where the amount of DNA is given in "pg" (picograms), we can proceed with the assumption that "pg" refers to picograms. Therefore, we can use the formula provided earlier:
Amount of DNA at the end of G2 phase = Initial amount of DNA x 2
Given that the initial amount of DNA in the egg cell's nucleus is 10 pg, we can calculate:
Amount of DNA at the end of G2 phase = 10 pg x 2 = 20 pg
So, based on the assumption that "pg" represents picograms, the amount of DNA at the end of the G2 phase of mitosis would be 20 picograms.