The labeled nucleotides were incorporated into ... eukaryotic chromosomes are linear. During circular DNA replication, the excised primer is readily replaced by nucleotides, leaving no gap in ...

"Until now, we lacked a way to specifically label euchromatin and heterochromatin ... important processes like gene expression and DNA replication. "These differences in chromatin behavior are ...

During DNA replication, special enzymes move up along the DNA ladder, unzipping the molecule as it moves along. New nucleotides move in to each side of the unzipped ladder. The bases on these ...

In their new study, the researchers studied the DNA replication patterns in early embryos. "We discovered differences in the replication mechanisms of maternal and paternal DNA during the initial ...

A centrifuge was used to separate DNA molecules labeled with isotopes of different densities. This experiment revealed a pattern that supports the semiconservative model of DNA replication.