Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
If radioactive thymidine is used during S-phase of interphase, which part of the chromosome will become radioactive?
BiologyCell Cycle and Cell DivisionNEET
Options:
  • A Near the centromere
  • B At both end of chromosome
  • C Euchromatin region
  • D Both euchromatin and heterochromatin region
Solution:
1075 Upvotes Verified Answer
The correct answer is: Both euchromatin and heterochromatin region
The replication of genetic material during cell division takes place in S-phase. The complete genetic material is replication thus euchromatin as well as heterochromatin both are replicated. Though euchromatin replicates in early S-phase while 
heterochromatin replicates in late S-phase.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.