NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice
If radioactive thymidine is used during S-phase of interphase, which part of the chromosome will become radioactive?
Options
- ANear the centromere
- BAt both end of chromosome
- CEuchromatin region
- DBoth euchromatin and heterochromatin region
Correct answer
D. Both euchromatin and heterochromatin region
Step-by-step solution
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.