In planet Aggieus DNA replication is known to be conservative. Researchers kept replicating alien bacteria in media supplied with 15N and then isolated a single bacteria and placed it into 14N containing media.

After three divisions how many bacterial cells would contain 15N DNA?

According to conservative model of DNA replication, the two DNA strands do not separate from each other and direct the synthesis of entirely new DNA molecule.

Here, a single bacteria had 15N DNA strands and then it was placed in N14 media. All the subsequent divisions would utilize 14N.

After one division: One 15N DNA and one 14N DNA

After two divisions : One 15N DNA and three 14N DNA

After three divisions: One 15N DNA and seven 14N DNA

Hence only one bacterial cell will contain 15N DNA

In planet Aggieus DNA replication is known to be conservative. Researchers kept replicating alien bacteria in media supplied with 15N and then isolated a single bacteria and placed it into 14N containing media. After three divisions how many bacterial cells would contain 15N DNA?

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In planet Aggieus DNA replication is known to be conservative. Researchers kept replicating alien bacteria in media supplied with 15N and then isolated a single bacteria and placed it into 14N containing media.

After three divisions how many bacterial cells would contain 15N DNA?