In a diploid cell with five chromosome pairs 2n=10, how many different centromere's will be found in the nucleus at g2 of the cell cycle? the answers are 1,5,10,20, or each sister chromatid has a i put 10 and it says wrong

a time line cause it goes from 685 to 978

the correct answer in apex is tissue development, i know because i just had this question

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.