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MDCAT Biology QUESTION #4282
Question 1
A mature duplicated chromosome consists of:
  • Two identical double helical DNA molecules✔️
  • Two different double helical DNA molecules
  • A double helical DNA molecule distributed in both chromatids
  • Histone chains wrapped around DNA core
Correct Answer Explanation
After DNA replication, a duplicated chromosome consists of two identical sister chromatids, each containing a complete double-stranded DNA molecule, joined at the centromere.