In mammalian cells, Cdt1 is targeted for degradation by the action of a protein complex that is recruited to the origin of replication by PCNA, the eukaryotic counterpart of the bacterial b clamp.

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#Id: 6666

#Unit 3. Fundamental Processes

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#Id: 1593

#Unit 5. Developmental Biology

Hensen’s node is the functional equivalent of the organizer (dorsal lip of the amphibian blastopore)

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#Id: 423

#Unit 2. Cellular Organization

The second level of organization is the coiling of the 10-nm fiber of nucleosomes into a helical array to constitute the fiber of diameter 30 nm.

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#Id: 882

#Unit 13. Methods in Biology

The genetic diseases caused by trinucleotide repeat SSRs within genes. Huntington disease (HD) is one of the approximately 20 such trinucleotide repeat diseases in humans. HD is transmitted as an autosomal dominant mutation.

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#Id: 5842

#Unit 10. Ecological Principles

Characteristics of early and late seral stages