Concept explainers
To review:
The effects of exposing eukaryotic cells to radioactive thymidine during the S or synthesis phase of interphase, on sister chromatids of the duplicated chromosome at metaphase of the mitosis, after the second round of DNA (deoxyribonucleic acid) replication in a medium free of radioactive labels.
Introduction:
DNA of eukaryotic chromosomes replicate semi-conservatively. This was illustrated by labeling the cells with radioactive thymidine during the S-phase and then grown in the absence of radioactive thymidine. The cell cycle was then studied. The cell cycle consists of interphase and mitotic phase. DNA is synthesized during the S-phase of interphase whereas the mitotic phase is the divisional phase and consists of prophase, metaphase, anaphase, and telophase.
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Biology: The Dynamic Science (MindTap Course List)
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