In Meselson and Stahl's experiment (1958), DNA extracted from the culture, one generation after the transfer from 15NH4Cl containing medium to 14NH4Cl containing medium had a hybrid (intermediate) density. Why?

In Meselson and Stahl's experiment, after a round of binary fission, each DNA has one strand with15N and another one 14N. hence the density is intermediate or hybrid density.

In Meselson and Stahl's experiment (1958), DNA extracted from the culture, one generation after the transfer from 15NH4Cl containing medium to 14NH4Cl containing medium had a hybrid (intermediate) density. Why?

In Meselson and Stahl's experiment, after a round of binary fission, each DNA has one strand with15N and another one 14N. hence the density is intermediate or hybrid density.

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In Meselson and Stahl's experiment (1958), DNA extracted from the culture, one generation after the transfer from ¹⁵NH₄Cl containing medium to ¹⁴NH₄Cl containing medium had a hybrid (intermediate) density. Why?

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The daughter DNA molecules have on stand with ¹⁵N referred as heavy strand and another one with ¹⁴N of light strand.

Because it would take 20 minutes for DNA replication

Because it would take 20 minutes for transcription of DNA to RNA

Because it would take 20 minutes for translation RNA to protein

answer is A.

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Detailed Solution

In Meselson and Stahl's experiment, after a round of binary fission, each DNA has one strand with¹⁵N and another one ¹⁴N. hence the density is intermediate or hybrid density.

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