After DNA replication, each chromosome consists of

  1. four chromatids
  2. two sister chromatids joined at a centromere
  3. one chromatid
  4. two homologous chromosomes
Answer

B) two sister chromatids joined at a centromere

Replicated chromosomes have two chromatids. AS & A Level Biology · Topic 5 The Mitotic Cell Cycle · 5.1 Replication and division of nuclei and cells

Biology MCQ · More A Level Biology: The mitotic cell cycle MCQs · Practise