What is the process called when embryonic cartilage is replaced by bone cells?

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

i think the answer would be d

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.